diff --git a/en/mix/index.html b/en/mix/index.html
index bb210c3..48d7f20 100644
--- a/en/mix/index.html
+++ b/en/mix/index.html
@@ -1194,7 +1194,7 @@ <h2 id='signature'>Signature</h2>
 <p>Get contract depth information, take cmt_btcusdt as an example:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;GET&quot;</li>
 <li>requestPath = &quot;/api/mix/V1/market/depth&quot;</li>
 <li>queryString= &quot;?symbol=BTCUSDT_UMCBL&amp;limit=20&quot;</li>
@@ -1203,13 +1203,13 @@ <h2 id='signature'>Signature</h2>
 <p>Generate the string to be signed:</p>
 
 <p><code>
-&#39;16273667805456GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
+&#39;1627366780545GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
 </code></p>
 
 <p>Contract order, take cmt_btcusdt as an example:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;POST&quot;</li>
 <li>requestPath = &quot;/api/mix/v1/order/placeOrder&quot;</li>
 <li>body = {&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;orderType&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}</li>
@@ -1218,7 +1218,7 @@ <h2 id='signature'>Signature</h2>
 <p>Generate the string to be signed:</p>
 
 <p><code>
-&#39;16273667805456POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;  
+&#39;1627366780545POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;
 </code></p>
 
 <p><strong>Steps to generate the final signature</strong> </p>
diff --git a/includes/en/mix/index b/includes/en/mix/index
index 85417b7..022face 100644
--- a/includes/en/mix/index
+++ b/includes/en/mix/index
@@ -383,7 +383,7 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>Get contract depth information, take cmt_btcusdt as an example:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;GET&quot;</li>
 <li>requestPath = &quot;/api/mix/V1/market/depth&quot;</li>
 <li>queryString= &quot;?symbol=BTCUSDT_UMCBL&amp;limit=20&quot;</li>
@@ -392,13 +392,13 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>Generate the string to be signed:</p>
 
 <p><code>
-&#39;16273667805456GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
+&#39;1627366780545GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
 </code></p>
 
 <p>Contract order, take cmt_btcusdt as an example:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;POST&quot;</li>
 <li>requestPath = &quot;/api/mix/v1/order/placeOrder&quot;</li>
 <li>body = {&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;orderType&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}</li>
@@ -407,7 +407,7 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>Generate the string to be signed:</p>
 
 <p><code>
-&#39;16273667805456POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;  
+&#39;1627366780545POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;
 </code></p>
 
 <p><strong>Steps to generate the final signature</strong> </p>
diff --git a/includes/zh/mix/index b/includes/zh/mix/index
index df07309..288b4d7 100644
--- a/includes/zh/mix/index
+++ b/includes/zh/mix/index
@@ -383,7 +383,7 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>获取合约深度信息，以 cmt_btcusdt 为例:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;GET&quot;</li>
 <li>requestPath = &quot;/api/mix/V1/market/depth&quot;</li>
 <li>queryString= &quot;?symbol=BTCUSDT_UMCBL&amp;limit=20&quot;</li>
@@ -392,13 +392,13 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>生成待签名的字符串:</p>
 
 <p><code>
-&#39;16273667805456GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
+&#39;1627366780545GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
 </code></p>
 
 <p>合约下单，以 cmt_btcusdt 为例:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;POST&quot;</li>
 <li>requestPath = &quot;/api/mix/v1/order/placeOrder&quot;</li>
 <li>body = {&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;orderType&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}</li>
@@ -407,7 +407,7 @@ timestamp + method.toUpperCase() + requestPath + &quot;?&quot; + queryString + b
 <p>生成待签名的字符串:</p>
 
 <p><code>
-&#39;16273667805456POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;  
+&#39;1627366780545POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;
 </code></p>
 
 <p><strong>生成最终签名的步骤</strong> </p>
diff --git a/zh/mix/index.html b/zh/mix/index.html
index 052bb1c..49b5851 100644
--- a/zh/mix/index.html
+++ b/zh/mix/index.html
@@ -1201,7 +1201,7 @@ <h2 id='8ba46c43fe'>签名</h2>
 <p>获取合约深度信息，以 cmt_btcusdt 为例:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;GET&quot;</li>
 <li>requestPath = &quot;/api/mix/V1/market/depth&quot;</li>
 <li>queryString= &quot;?symbol=BTCUSDT_UMCBL&amp;limit=20&quot;</li>
@@ -1210,13 +1210,13 @@ <h2 id='8ba46c43fe'>签名</h2>
 <p>生成待签名的字符串:</p>
 
 <p><code>
-&#39;16273667805456GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
+&#39;1627366780545GET/api/mix/v1/market/depth?symbol=BTCUSDT_UMCBL&amp;limit=20&#39;
 </code></p>
 
 <p>合约下单，以 cmt_btcusdt 为例:</p>
 
 <ul>
-<li>Timestamp = 16273667805456</li>
+<li>Timestamp = 1627366780545</li>
 <li>Method = &quot;POST&quot;</li>
 <li>requestPath = &quot;/api/mix/v1/order/placeOrder&quot;</li>
 <li>body = {&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;orderType&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}</li>
@@ -1225,7 +1225,7 @@ <h2 id='8ba46c43fe'>签名</h2>
 <p>生成待签名的字符串:</p>
 
 <p><code>
-&#39;16273667805456POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;  
+&#39;1627366780545POST/api/mix/v1/order/placeOrder{&quot;symbol&quot;:&quot;BTCUSDT_UMCBL&quot;,&quot;size&quot;:&quot;8&quot;,&quot;side&quot;:&quot;open_long&quot;,&quot;order_type&quot;:&quot;limit&quot;,&quot;client_oid&quot;:&quot;bitget#123456&quot;}&#39;
 </code></p>
 
 <p><strong>生成最终签名的步骤</strong> </p>