a16z &#273;&#7847;u t&#432; 50 tri&#7879;u USD v&agrave;o Jito, m&#7897;t cam k&#7871;t c&oacute; th&#7875; mang l&#7841;i l&#7907;i &iacute;ch l&#7899;n cho m&#7841;ng l&#432;&#7899;i Solana. C&ocirc;ng ty VC n&agrave;y nh&#7857;m n&acirc;ng c&#7845;p c&#417; s&#7903; h&#7841; t&#7847;ng trong d&agrave;i h&#7841;n, t&#7889;i &#432;u h&oacute;a MEV v&agrave; &#273;&#7843;m b&#7843;o hi&#7879;u qu&#7843;.
Tuy nhi&ecirc;n, s&#7921; h&#7907;p t&aacute;c n&agrave;y kh&ocirc;ng quan t&acirc;m &#273;&#7871;n vi&#7879;c t&#259;ng gi&aacute; ngay l&#7853;p t&#7913;c, v&agrave; c&oacute; th&#7875; ch&uacute;ng ta s&#7869; kh&ocirc;ng th&#7845;y l&#7907;i nhu&#7853;n b&#7873;n v&#7919;ng c&#7911;a SOL trong m&#7897;t th&#7901;i gian. C&aacute;c nh&agrave; &#273;&#7847;u t&#432; n&ecirc;n ch&uacute; &yacute; &#273;&#7871;n t&acirc;m l&yacute; c&#7897;ng &#273;&#7891;ng Solana, &#273;i&#7873;u n&agrave;y c&oacute; th&#7875; l&agrave; ch&#7881; s&#7889; quan tr&#7885;ng cho s&#7921; th&agrave;nh c&ocirc;ng.
<h2 class="bic-gutenberg-heading wp-heading wp-block-heading" id="h-a16z-invests-in-jito">a16z &#273;&#7847;u t&#432; v&agrave;o Jito</h2>

S&aacute;ng nay, Fortune <a href="https://fortune.com/crypto/2025/10/16/andreessen-horowitzs-crypto-arm-invests-50-million-in-solana-staking-protocol-jito/" target="_blank" rel="noreferrer noopener nofollow">&#273;&atilde; b&aacute;o c&aacute;o</a> r&#7857;ng a16z, m&#7897;t <a href="https://vn.beincrypto.com/a16z-sec-crypto-custody-reform/" target="_blank" rel="noreferrer noopener">c&ocirc;ng ty VC n&#7893;i b&#7853;t trong l&#297;nh v&#7921;c ti&#7873;n &#273;i&#7879;n t&#7917;</a>, &#273;&atilde; &#273;&#7847;u t&#432; 50 tri&#7879;u USD v&agrave;o Jito, m&#7897;t d&#7921; &aacute;n c&#417; s&#7903; h&#7841; t&#7847;ng l&#7899;n c&#7911;a Solana.
&#272;&acirc;y l&agrave; kho&#7843;n &#273;&#7847;u t&#432; l&#7899;n nh&#7845;t m&agrave; Jito nh&#7853;n &#273;&#432;&#7907;c t&#7915; b&#7845;t k&#7923; c&ocirc;ng ty n&agrave;o, b&aacute;o hi&#7879;u m&#7897;t c&#417; h&#7897;i l&#7899;n.
M&#7863;c d&ugrave; &#273;i&#7873;u n&agrave;y c&oacute; th&#7875; c&oacute; nh&#7919;ng t&aacute;c &#273;&#7897;ng quan tr&#7885;ng trong d&agrave;i h&#7841;n, nh&#432;ng t&#7845;t c&#7843; nh&#7919;ng g&igrave; ch&uacute;ng ta th&#7845;y trong l&#7907;i nhu&#7853;n ngay l&#7853;p t&#7913;c l&agrave; s&#7921; gi&#7843;m gi&aacute;. SOL &#273;&atilde; <a href="https://vn.beincrypto.com/sol-fud-spreads-but-solanas-technical-strength-tells-a-different-story/" target="_blank" rel="noreferrer noopener">&#273;ang trong t&igrave;nh tr&#7841;ng suy gi&#7843;m tu&#7847;n n&agrave;y</a>, v&agrave; n&oacute; <a href="https://vn.beincrypto.com/solana-price-fails-to-hold-above-support/" target="_blank" rel="noreferrer noopener">ti&#7871;p t&#7909;c gi&#7843;m d&ugrave; &#273;&atilde; c&oacute; th&ocirc;ng b&aacute;o</a>:
<img style="height:400px;width:640px;" decoding="async" alt="Solana After Jito Announcement" class="wp-image-761800 lazy" loading="lazy" src="https://assets.beincrypto.com/img/FUxKUNjsxTcj3H8ks4x5y3C5wuI=/smart/0df0a63452dd4d80bafea8fff86ef709">Hi&#7879;u su&#7845;t gi&aacute; Solana. Ngu&#7891;n: <a href="https://www.coingecko.com/en/coins/solana" target="_blank" rel="noreferrer noopener">CoinGecko</a>

V&#7853;y, c&aacute;c nh&agrave; giao d&#7883;ch ti&#7873;n &#273;i&#7879;n t&#7917; c&oacute; th&#7875; hi&#7875;u &#273;i&#7873;u n&agrave;y nh&#432; th&#7871; n&agrave;o? &#272;&#7847;u t&#432; c&#7911;a a16z c&oacute; th&#7875; thay &#273;&#7893;i g&igrave; cho Jito, v&agrave; &#273;i&#7873;u &#273;&oacute; c&oacute; th&#7875; d&#7851;n &#273;&#7871;n l&#7907;i &iacute;ch th&#7921;c s&#7921; n&agrave;o cho Solana?
<a href="https://vn.beincrypto.com/jito-brian-smith-restaking-future/" target="_blank" rel="noreferrer noopener">Jito l&agrave; m&#7897;t trong nh&#7919;ng giao th&#7913;c restaking v&agrave; liquid staking h&agrave;ng &#273;&#7847;u c&#7911;a Solana</a>, v&agrave; pool stake c&#7911;a n&oacute; nh&#7853;n &#273;&#432;&#7907;c m&#7897;t ph&#7847;n l&#7899;n SOL.
Client validator c&#7911;a n&oacute; (Jito-Solana) chi&#7871;m <a href="https://beincrypto.com/jito-tvl-10-million-sol-restaking-rumors/">m&#7897;t ph&#7847;n l&#7899;n tr&#7885;ng l&#432;&#7907;ng stake</a> (~30&ndash;40 %), khi&#7871;n n&oacute; tr&#7903; th&agrave;nh m&#7897;t trong nh&#7919;ng th&#7921;c th&#7875; c&oacute; &#7843;nh h&#432;&#7903;ng nh&#7845;t trong h&#7879; sinh th&aacute;i validator c&#7911;a Solana &mdash; ch&#7911; y&#7871;u c&#7841;nh tranh v&#7899;i client m&#7863;c &#273;&#7883;nh c&#7911;a Solana Labs.
<h2 class="bic-gutenberg-heading wp-heading wp-block-heading" id="h-maximizing-solana-value">T&#7889;i &#273;a h&oacute;a gi&aacute; tr&#7883; Solana</h2>

Ch&igrave;a kh&oacute;a &#273;&#7875; hi&#7875;u t&#7845;t c&#7843; &#273;i&#7873;u n&agrave;y l&agrave; MEV, hay Maximal Extractive Value. N&oacute; &#273;&#7873; c&#7853;p &#273;&#7871;n doanh thu b&#7893; sung c&oacute; th&#7875; &#273;&#432;&#7907;c tr&iacute;ch xu&#7845;t t&#7915; c&aacute;c ch&#7913;c n&#259;ng th&#7913; c&#7845;p, ch&#7859;ng h&#7841;n nh&#432; bao g&#7891;m, lo&#7841;i tr&#7915; ho&#7863;c s&#7855;p x&#7871;p l&#7841;i c&aacute;c giao d&#7883;ch trong m&#7897;t block. a16z r&#7845;t <a href="https://a16zcrypto.com/posts/article/mev-explained/" target="_blank" rel="noreferrer noopener nofollow">quan t&acirc;m</a> &#273;&#7871;n MEV, v&agrave; Jito c&oacute; th&#7875; t&#7889;i &#273;a h&oacute;a thu nh&#7853;p n&agrave;y.
C&aacute;c ch&#7913;c n&#259;ng c&#7889;t l&otilde;i c&#7911;a Jito bao g&#7891;m t&#7889;i &#432;u h&oacute;a s&#7843;n xu&#7845;t block, ph&#7847;n th&#432;&#7903;ng validator v&agrave; liquid staking tr&ecirc;n Solana, v&agrave; a16z c&oacute; th&#7875; h&#432;&#7903;ng l&#7907;i t&#7915; &#273;i&#7873;u n&agrave;y theo nh&#7919;ng c&aacute;ch quan tr&#7885;ng.
B&#7857;ng c&aacute;ch x&acirc;y d&#7921;ng n&#259;ng l&#7921;c c&#7911;a giao th&#7913;c, c&ocirc;ng ty VC c&oacute; th&#7875; cho ph&eacute;p lu&#7891;ng giao d&#7883;ch nhanh ch&oacute;ng v&agrave; gi&uacute;p chuy&#7875;n nhi&#7873;u ti&#7873;n &#273;&#7845;u gi&aacute; MEV tr&#7903; l&#7841;i cho nh&#7919;ng ng&#432;&#7901;i stake.
Jito c&oacute; th&#7875; chu&#7849;n h&oacute;a th&#7883; tr&#432;&#7901;ng MEV v&agrave; ph&acirc;n ph&#7889;i l&#7841;i nhi&#7873;u gi&aacute; tr&#7883; h&#417;n cho c&#7897;ng &#273;&#7891;ng, khuy&#7871;n kh&iacute;ch vi&#7879;c ch&#7845;p nh&#7853;n SOL tr&ecirc;n to&agrave;n b&#7897;.
N&#7871;u Solana tr&#7903; n&ecirc;n n&#7893;i b&#7853;t h&#417;n, Jito s&#7869; t&#7921; nhi&ecirc;n ph&aacute;t tri&#7875;n theo, v&agrave; a16z &#273;ang l&ecirc;n k&#7871; ho&#7841;ch cho m&#7897;t m&#7889;i quan h&#7879; l&acirc;u d&agrave;i v&#7899;i n&oacute;. N&oacute;i c&aacute;ch kh&aacute;c, c&ocirc;ng ty kh&ocirc;ng c&#7889; g&#7855;ng t&igrave;m ki&#7871;m con &#273;&#432;&#7901;ng nhanh ch&oacute;ng &#273;&#7875; thu l&#7907;i nhu&#7853;n, m&agrave; hy v&#7885;ng g&#7863;t h&aacute;i th&agrave;nh qu&#7843; t&#7915; s&#7921; ph&aacute;t tri&#7875;n c&#7911;a SOL theo th&#7901;i gian.
M&#7889;i quan h&#7879; nh&#432; v&#7853;y s&#7869; c&oacute; l&#7907;i cho t&#7845;t c&#7843; c&aacute;c b&ecirc;n.
Tuy nhi&ecirc;n, c&#7897;ng &#273;&#7891;ng Solana &#273;&atilde; c&oacute; cu&#7897;c <a href="https://erp.solanacompass.com/learn/Lightspeed/the-jito-impact-is-jito-saving-solana-jon-charbonneau" target="_blank" rel="noreferrer noopener nofollow">tranh lu&#7853;n</a> gay g&#7855;t v&#7873; vai tr&ograve; c&#7911;a Jito trong vi&#7879;c t&#7853;p trung h&oacute;a blockchain. N&#7871;u a16z tr&#7903; th&agrave;nh m&#7897;t th&agrave;nh ph&#7847;n quan tr&#7885;ng c&#7911;a Jito trong t&#432;&#417;ng lai, &#273;i&#7873;u &#273;&oacute; c&#361;ng c&oacute; th&#7875; l&agrave;m m&#7845;t l&ograve;ng nh&#7919;ng ng&#432;&#7901;i &#7911;ng h&#7897; DeFi.
T&acirc;m l&yacute; ng&#432;&#7901;i d&ugrave;ng c&oacute; th&#7875; l&agrave; tr&#7903; ng&#7841;i ch&iacute;nh, v&igrave; s&#7921; h&#7907;p t&aacute;c n&agrave;y d&#432;&#7901;ng nh&#432; t&#7853;p trung v&agrave;o vi&#7879;c c&#7843;i thi&#7879;n kh&#7843; n&#259;ng k&#7929; thu&#7853;t.

Solana nhận được sự hỗ trợ lớn từ a16z

a16z &#273;&#7847;u t&#432; 50 tri&#7879;u USD v&agrave;o Jito, m&#7897;t cam k&#7871;t c&oacute; th&#7875; mang l&#7841;i l&#7907;i &iacute;ch l&#7899;n cho m&#7841;ng l&#432;&#7899;i Solana. C&ocirc;ng ty VC n&agrave;y nh&#7857;m n&acirc;ng c&#7845;p c&#417; s&#7903; h&#7841; t&#7847;ng trong d&agrave;i h&#7841;n, t&#7889;i &#432;u h&oacute;a MEV v&agrave; &#273;&#7843;m b&#7843;o hi&#7879;u qu&#7843;.
Tuy nhi&ecirc;n, s&#7921; h&#7907;p t&aacute;c n&agrave;y kh&ocirc;ng quan t&acirc;m &#273;&#7871;n vi&#7879;c t&#259;ng gi&aacute; ngay l&#7853;p t&#7913;c, v&agrave; c&oacute; th&#7875; ch&uacute;ng ta s&#7869; kh&ocirc;ng th&#7845;y l&#7907;i nhu&#7853;n b&#7873;n v&#7919;ng c&#7911;a SOL trong m&#7897;t th&#7901;i gian. C&aacute;c nh&agrave; &#273;&#7847;u t&#432; n&ecirc;n ch&uacute; &yacute; &#273;&#7871;n t&acirc;m l&yacute; c&#7897;ng &#273;&#7891;ng Solana, &#273;i&#7873;u n&agrave;y c&oacute; th&#7875; l&agrave; ch&#7881; s&#7889; quan tr&#7885;ng cho s&#7921; th&agrave;nh c&ocirc;ng.
<h2 class="bic-gutenberg-heading wp-heading wp-block-heading" id="h-a16z-invests-in-jito">a16z &#273;&#7847;u t&#432; v&agrave;o Jito</h2>

S&aacute;ng nay, Fortune <a href="https://fortune.com/crypto/2025/10/16/andreessen-horowitzs-crypto-arm-invests-50-million-in-solana-staking-protocol-jito/" target="_blank" rel="noreferrer noopener nofollow">&#273;&atilde; b&aacute;o c&aacute;o</a> r&#7857;ng a16z, m&#7897;t <a href="https://vn.beincrypto.com/a16z-sec-crypto-custody-reform/" target="_blank" rel="noreferrer noopener">c&ocirc;ng ty VC n&#7893;i b&#7853;t trong l&#297;nh v&#7921;c ti&#7873;n &#273;i&#7879;n t&#7917;</a>, &#273;&atilde; &#273;&#7847;u t&#432; 50 tri&#7879;u USD v&agrave;o Jito, m&#7897;t d&#7921; &aacute;n c&#417; s&#7903; h&#7841; t&#7847;ng l&#7899;n c&#7911;a Solana.
&#272;&acirc;y l&agrave; kho&#7843;n &#273;&#7847;u t&#432; l&#7899;n nh&#7845;t m&agrave; Jito nh&#7853;n &#273;&#432;&#7907;c t&#7915; b&#7845;t k&#7923; c&ocirc;ng ty n&agrave;o, b&aacute;o hi&#7879;u m&#7897;t c&#417; h&#7897;i l&#7899;n.
M&#7863;c d&ugrave; &#273;i&#7873;u n&agrave;y c&oacute; th&#7875; c&oacute; nh&#7919;ng t&aacute;c &#273;&#7897;ng quan tr&#7885;ng trong d&agrave;i h&#7841;n, nh&#432;ng t&#7845;t c&#7843; nh&#7919;ng g&igrave; ch&uacute;ng ta th&#7845;y trong l&#7907;i nhu&#7853;n ngay l&#7853;p t&#7913;c l&agrave; s&#7921; gi&#7843;m gi&aacute;. SOL &#273;&atilde; <a href="https://vn.beincrypto.com/sol-fud-spreads-but-solanas-technical-strength-tells-a-different-story/" target="_blank" rel="noreferrer noopener">&#273;ang trong t&igrave;nh tr&#7841;ng suy gi&#7843;m tu&#7847;n n&agrave;y</a>, v&agrave; n&oacute; <a href="https://vn.beincrypto.com/solana-price-fails-to-hold-above-support/" target="_blank" rel="noreferrer noopener">ti&#7871;p t&#7909;c gi&#7843;m d&ugrave; &#273;&atilde; c&oacute; th&ocirc;ng b&aacute;o</a>:
<img style="height:400px;width:640px;"decoding="async" alt="Solana After Jito Announcement" class="wp-image-761800 lazy" loading="lazy" src="https://assets.beincrypto.com/img/FUxKUNjsxTcj3H8ks4x5y3C5wuI=/smart/0df0a63452dd4d80bafea8fff86ef709">Hi&#7879;u su&#7845;t gi&aacute; Solana. Ngu&#7891;n: <a href="https://www.coingecko.com/en/coins/solana" target="_blank" rel="noreferrer noopener">CoinGecko</a>

V&#7853;y, c&aacute;c nh&agrave; giao d&#7883;ch ti&#7873;n &#273;i&#7879;n t&#7917; c&oacute; th&#7875; hi&#7875;u &#273;i&#7873;u n&agrave;y nh&#432; th&#7871; n&agrave;o? &#272;&#7847;u t&#432; c&#7911;a a16z c&oacute; th&#7875; thay &#273;&#7893;i g&igrave; cho Jito, v&agrave; &#273;i&#7873;u &#273;&oacute; c&oacute; th&#7875; d&#7851;n &#273;&#7871;n l&#7907;i &iacute;ch th&#7921;c s&#7921; n&agrave;o cho Solana?
<a href="https://vn.beincrypto.com/jito-brian-smith-restaking-future/" target="_blank" rel="noreferrer noopener">Jito l&agrave; m&#7897;t trong nh&#7919;ng giao th&#7913;c restaking v&agrave; liquid staking h&agrave;ng &#273;&#7847;u c&#7911;a Solana</a>, v&agrave; pool stake c&#7911;a n&oacute; nh&#7853;n &#273;&#432;&#7907;c m&#7897;t ph&#7847;n l&#7899;n SOL.
Client validator c&#7911;a n&oacute; (Jito-Solana) chi&#7871;m <a href="https://beincrypto.com/jito-tvl-10-million-sol-restaking-rumors/">m&#7897;t ph&#7847;n l&#7899;n tr&#7885;ng l&#432;&#7907;ng stake</a> (~30&ndash;40 %), khi&#7871;n n&oacute; tr&#7903; th&agrave;nh m&#7897;t trong nh&#7919;ng th&#7921;c th&#7875; c&oacute; &#7843;nh h&#432;&#7903;ng nh&#7845;t trong h&#7879; sinh th&aacute;i validator c&#7911;a Solana &mdash; ch&#7911; y&#7871;u c&#7841;nh tranh v&#7899;i client m&#7863;c &#273;&#7883;nh c&#7911;a Solana Labs.
<h2 class="bic-gutenberg-heading wp-heading wp-block-heading" id="h-maximizing-solana-value">T&#7889;i &#273;a h&oacute;a gi&aacute; tr&#7883; Solana</h2>

Ch&igrave;a kh&oacute;a &#273;&#7875; hi&#7875;u t&#7845;t c&#7843; &#273;i&#7873;u n&agrave;y l&agrave; MEV, hay Maximal Extractive Value. N&oacute; &#273;&#7873; c&#7853;p &#273;&#7871;n doanh thu b&#7893; sung c&oacute; th&#7875; &#273;&#432;&#7907;c tr&iacute;ch xu&#7845;t t&#7915; c&aacute;c ch&#7913;c n&#259;ng th&#7913; c&#7845;p, ch&#7859;ng h&#7841;n nh&#432; bao g&#7891;m, lo&#7841;i tr&#7915; ho&#7863;c s&#7855;p x&#7871;p l&#7841;i c&aacute;c giao d&#7883;ch trong m&#7897;t block. a16z r&#7845;t <a href="https://a16zcrypto.com/posts/article/mev-explained/" target="_blank" rel="noreferrer noopener nofollow">quan t&acirc;m</a> &#273;&#7871;n MEV, v&agrave; Jito c&oacute; th&#7875; t&#7889;i &#273;a h&oacute;a thu nh&#7853;p n&agrave;y.
C&aacute;c ch&#7913;c n&#259;ng c&#7889;t l&otilde;i c&#7911;a Jito bao g&#7891;m t&#7889;i &#432;u h&oacute;a s&#7843;n xu&#7845;t block, ph&#7847;n th&#432;&#7903;ng validator v&agrave; liquid staking tr&ecirc;n Solana, v&agrave; a16z c&oacute; th&#7875; h&#432;&#7903;ng l&#7907;i t&#7915; &#273;i&#7873;u n&agrave;y theo nh&#7919;ng c&aacute;ch quan tr&#7885;ng.
B&#7857;ng c&aacute;ch x&acirc;y d&#7921;ng n&#259;ng l&#7921;c c&#7911;a giao th&#7913;c, c&ocirc;ng ty VC c&oacute; th&#7875; cho ph&eacute;p lu&#7891;ng giao d&#7883;ch nhanh ch&oacute;ng v&agrave; gi&uacute;p chuy&#7875;n nhi&#7873;u ti&#7873;n &#273;&#7845;u gi&aacute; MEV tr&#7903; l&#7841;i cho nh&#7919;ng ng&#432;&#7901;i stake.
Jito c&oacute; th&#7875; chu&#7849;n h&oacute;a th&#7883; tr&#432;&#7901;ng MEV v&agrave; ph&acirc;n ph&#7889;i l&#7841;i nhi&#7873;u gi&aacute; tr&#7883; h&#417;n cho c&#7897;ng &#273;&#7891;ng, khuy&#7871;n kh&iacute;ch vi&#7879;c ch&#7845;p nh&#7853;n SOL tr&ecirc;n to&agrave;n b&#7897;.
N&#7871;u Solana tr&#7903; n&ecirc;n n&#7893;i b&#7853;t h&#417;n, Jito s&#7869; t&#7921; nhi&ecirc;n ph&aacute;t tri&#7875;n theo, v&agrave; a16z &#273;ang l&ecirc;n k&#7871; ho&#7841;ch cho m&#7897;t m&#7889;i quan h&#7879; l&acirc;u d&agrave;i v&#7899;i n&oacute;. N&oacute;i c&aacute;ch kh&aacute;c, c&ocirc;ng ty kh&ocirc;ng c&#7889; g&#7855;ng t&igrave;m ki&#7871;m con &#273;&#432;&#7901;ng nhanh ch&oacute;ng &#273;&#7875; thu l&#7907;i nhu&#7853;n, m&agrave; hy v&#7885;ng g&#7863;t h&aacute;i th&agrave;nh qu&#7843; t&#7915; s&#7921; ph&aacute;t tri&#7875;n c&#7911;a SOL theo th&#7901;i gian.
M&#7889;i quan h&#7879; nh&#432; v&#7853;y s&#7869; c&oacute; l&#7907;i cho t&#7845;t c&#7843; c&aacute;c b&ecirc;n.
Tuy nhi&ecirc;n, c&#7897;ng &#273;&#7891;ng Solana &#273;&atilde; c&oacute; cu&#7897;c <a href="https://erp.solanacompass.com/learn/Lightspeed/the-jito-impact-is-jito-saving-solana-jon-charbonneau" target="_blank" rel="noreferrer noopener nofollow">tranh lu&#7853;n</a> gay g&#7855;t v&#7873; vai tr&ograve; c&#7911;a Jito trong vi&#7879;c t&#7853;p trung h&oacute;a blockchain. N&#7871;u a16z tr&#7903; th&agrave;nh m&#7897;t th&agrave;nh ph&#7847;n quan tr&#7885;ng c&#7911;a Jito trong t&#432;&#417;ng lai, &#273;i&#7873;u &#273;&oacute; c&#361;ng c&oacute; th&#7875; l&agrave;m m&#7845;t l&ograve;ng nh&#7919;ng ng&#432;&#7901;i &#7911;ng h&#7897; DeFi.
T&acirc;m l&yacute; ng&#432;&#7901;i d&ugrave;ng c&oacute; th&#7875; l&agrave; tr&#7903; ng&#7841;i ch&iacute;nh, v&igrave; s&#7921; h&#7907;p t&aacute;c n&agrave;y d&#432;&#7901;ng nh&#432; t&#7853;p trung v&agrave;o vi&#7879;c c&#7843;i thi&#7879;n kh&#7843; n&#259;ng k&#7929; thu&#7853;t.