diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index c10d1ee4..7765694a 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -21,7 +21,13 @@ jobs:
         run: npm install -g embedme
 
       - name: Verify README.md embedded code
-        run: npx embedme --verify README.md
+        run: embedme --verify README.md
+
+      - name: Link Checker
+        id: lychee
+        uses: lycheeverse/lychee-action@v2
+        with:
+          args: README.md
 
   doc_test:
     strategy:
diff --git a/README.md b/README.md
index a8941db5..60f53efd 100644
--- a/README.md
+++ b/README.md
@@ -401,11 +401,11 @@ TODO
 
 ## Development tools
 
-* [pydump](chore/_xtool/pydump): It's the first program compiled by `llgo` (NOT `go`) in a production environment. It outputs symbol information (functions, variables, and constants) from a Python library in JSON format, preparing for the generation of corresponding packages in `llgo`.
+* [pydump](_xtool/pydump): It's the first program compiled by `llgo` (NOT `go`) in a production environment. It outputs symbol information (functions, variables, and constants) from a Python library in JSON format, preparing for the generation of corresponding packages in `llgo`.
 * [pysigfetch](https://github.com/goplus/hdq/tree/main/chore/pysigfetch): It generates symbol information by extracting information from Python's documentation site. This tool is not part of the `llgo` project, but we depend on it.
-* [llpyg](chore/llpyg): It is used to automatically convert Python libraries into Go packages that `llgo` can import. It depends on `pydump` and `pysigfetch` to accomplish the task.
-* [llgen](chore/llgen): It is used to compile Go packages into LLVM IR files (*.ll).
-* [ssadump](chore/ssadump): It is a Go SSA builder and interpreter.
+* [llpyg](compiler/chore/llpyg): It is used to automatically convert Python libraries into Go packages that `llgo` can import. It depends on `pydump` and `pysigfetch` to accomplish the task.
+* [llgen](compiler/chore/llgen): It is used to compile Go packages into LLVM IR files (*.ll).
+* [ssadump](compiler/chore/ssadump): It is a Go SSA builder and interpreter.
 
 How do I generate these tools?
 
diff --git a/compiler/cmd/llgo/llgo_test.go b/compiler/cmd/llgo/llgo_test.go
index 9f82ce6d..1a97c726 100644
--- a/compiler/cmd/llgo/llgo_test.go
+++ b/compiler/cmd/llgo/llgo_test.go
@@ -213,7 +213,8 @@ func main() {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			var testErr error
-			for attempt := 0; attempt < 2; attempt++ {
+			const maxAttempts = 4
+			for attempt := 1; attempt <= maxAttempts; attempt++ {
 				testErr = func() error {
 					// Create a new test directory for each test case
 					tmpDir := setupTestProject(t)
@@ -285,8 +286,8 @@ func main() {
 					break
 				}
 
-				if attempt == 0 {
-					t.Logf("Test failed on first attempt: %v. Retrying...", testErr)
+				if attempt < maxAttempts {
+					t.Logf("Test failed on attempt %v/%v: %v. Retrying...", testErr, attempt, maxAttempts)
 				}
 			}