diff --git a/docs/Web开发/CS571.en.md b/docs/Web开发/CS571.en.md
index 9e7f896a..42de833a 100644
--- a/docs/Web开发/CS571.en.md
+++ b/docs/Web开发/CS571.en.md
@@ -16,7 +16,7 @@ Although this course doesn't require prior knowledge of Javascript/HTML/CSS, the
 
 This course also includes an introduction to and practices for Dialog Flow, a ChatBot development tool by Google. You can also find content related to UX development (on the practical side) in this course.
 
-All course materials and assignments are open-source, but you will need to request an X-CS571-ID header from the instructor, Cole Nelson (ctnelson2@wisc.edu). The header will be necessary for API request. When sending an email, it is advisable to include a brief self-introduction. It is unclear whether the instructor is willing to give everyone an ID. If you got turned down, please [raise an issue for this GitHub repo](https://github.com/PKUFlyingPig/cs-self-learning/issues/new/choose).
+CS571 is open to everybody based on the offical website. You can request an Badger ID from the [webpage](https://cs571.org/auth) with an email address directly
 
 ## Course Resources