diff --git a/docs/en/unit/watering.md b/docs/en/unit/watering.md
index 2136b320..5692a7b8 100644
--- a/docs/en/unit/watering.md
+++ b/docs/en/unit/watering.md
@@ -89,7 +89,9 @@
 
 <script>
 
-   anchor_search();
+   var purchase_link = 'https://m5stack.com/products/watering-unit-with-mositure-sensor-and-pump';
+
+   anchor_search(purchase_link);
    scrollFunc();
 
 </script>
\ No newline at end of file
diff --git a/docs/zh_CN/unit/watering.md b/docs/zh_CN/unit/watering.md
index 395d8e27..04d64194 100644
--- a/docs/zh_CN/unit/watering.md
+++ b/docs/zh_CN/unit/watering.md
@@ -89,7 +89,9 @@
 
 <script>
 
-   anchor_search();
+   var purchase_link = 'https://m5stack.com/products/watering-unit-with-mositure-sensor-and-pump';
+
+   anchor_search(purchase_link);
    scrollFunc();
 
 </script>
\ No newline at end of file