diff --git a/homework6/src/test4.c b/homework6/src/test4.c
new file mode 100644
index 0000000..5358bf3
--- /dev/null
+++ b/homework6/src/test4.c
@@ -0,0 +1,13 @@
+// test4.c
+// 利用定时器T0定时10秒，并通过数码管显示秒表，到10秒后让led流水灯从左往右移动
+// use timer T0 to count 10 seconds and display the stopwatch on the 7-segment display, and let the led light move from left to right after 10 seconds.
+#include "homework6.h"
+
+void test4()
+{
+}
+
+void main()
+{
+    test4();
+}
\ No newline at end of file