diff --git a/.agents/rules/AGENT.md b/.agents/rules/AGENT.md
index 512c0ff..2c33304 100644
--- a/.agents/rules/AGENT.md
+++ b/.agents/rules/AGENT.md
@@ -31,4 +31,9 @@ Never force-push blindly or overwrite other developers' work without understandi
 
 ## Project Management
 
-- The Current Development Progress is tracked and marked down and always updated in the File `TODO.md`
\ No newline at end of file
+- The Current Development Progress is tracked and marked down and always updated in the File `TODO.md`
+
+## Knowledge Management
+
+- Every time you learn something new or worth mentioning about the project (e.g., architecture details, aesthetic conventions, logic workflows), you MUST document it.
+- If it is not already recorded in the project's brain file, you must add it to `@[.agents/brain.md]`.
\ No newline at end of file