diff --git a/docs/handson-web-scrape-py/03.md b/docs/handson-web-scrape-py/03.md
index b8ad1dd..5cb2e1d 100644
--- a/docs/handson-web-scrape-py/03.md
+++ b/docs/handson-web-scrape-py/03.md
@@ -1183,11 +1183,11 @@ Output from list announcements obtained using lxml.cssselect It's also to be not
 *   XPath:[https://www.w3.org/TR/xpath/](https://www.w3.org/TR/xpath/) 、[https://www.w3.org/TR/2017/REC-xpath-31-20170321/](https://www.w3.org/TR/2017/REC-xpath-31-20170321/)
 *   XML-DOM:[https://www.w3schools.com/xml/dom_intro.asp](https://www.w3schools.com/xml/dom_intro.asp)
 *   XPath 简介：[https://www.w3schools.com/xml/xpath_intro.asp](https://www.w3schools.com/xml/xpath_intro.asp)
-*   XPath 测试仪：[https://freeformatter.com/xpath-tester.html](https://freeformatter.com/xpath-tester.html) 、[http://www.xpathtester.com/xslt](http://www.xpathtester.com/xslt) 、[https://codebeautify.org/Xpath-Tester](https://codebeautify.org/Xpath-Tester)
+*   XPath 测试仪：[https://freeformatter.com/xpath-tester.html](https://freeformatter.com/xpath-tester.html) 、[http://www.xpathtester.com/xslt](http://www.xpathtester.com/xslt) 、[https://codebeautify.org/Xpath-Tester](https://codebeautify.org/Xpath-Tester) 、[https://extendsclass.com/xpath-tester.html](https://extendsclass.com/xpath-tester.html)
 *   XPath 教程：[https://doc.scrapy.org/en/xpath-tutorial/topics/xpath-tutorial.html](https://doc.scrapy.org/en/xpath-tutorial/topics/xpath-tutorial.html)
 *   CSS 选择器参考：[https://www.w3schools.com/cssref/css_selectors.asp](https://www.w3schools.com/cssref/css_selectors.asp)
 *   CSS 伪类和元素：[https://www.w3schools.com/css/css_pseudo_elements.asp](https://www.w3schools.com/css/css_pseudo_elements.asp)
 *   CSS 信息：[http://www.css3.info/](http://www.css3.info/) 、[https://developer.mozilla.org/en-US/docs/Web/CSS](https://developer.mozilla.org/en-US/docs/Web/CSS)
 *   CSS 查询解析器：[https://try.jsoup.org/](https://try.jsoup.org/)
 *   XPath 的 CSS 选择器：[https://css-selector-to-xpath.appspot.com](https://css-selector-to-xpath.appspot.com)
-*   元素树概述：[http://effbot.org/zone/element-index.htm](http://effbot.org/zone/element-index.htm)*
\ No newline at end of file
+*   元素树概述：[http://effbot.org/zone/element-index.htm](http://effbot.org/zone/element-index.htm)*