diff --git a/2024.01.16_GUAN_package_learning/common/example_of_timer.py b/2024.01.16_GUAN_package_learning/common/example_of_timer.py
index 78c4fbc..da05f1e 100644
--- a/2024.01.16_GUAN_package_learning/common/example_of_timer.py
+++ b/2024.01.16_GUAN_package_learning/common/example_of_timer.py
@@ -2,10 +2,24 @@
 import guan
 
 @guan.timer_decorator
-def my_function():
+def test1(a, b):
     import time
+    print(a)
     time.sleep(2)
-    print('Run finished！')
+    print(b)
+    print('Run finished.')
 
 for _ in range(3):
-    my_function()
\ No newline at end of file
+    test1(10, b=20)
+
+print()
+
+def test2(a, b):
+    import time
+    print(a)
+    time.sleep(2)
+    print(b)
+    print('Run finished.')
+
+for _ in range(3):
+    guan.timer(test2, 10, b=20)
\ No newline at end of file
diff --git a/2024.01.16_GUAN_package_learning/common/example_of_try_except.py b/2024.01.16_GUAN_package_learning/common/example_of_try_except.py
new file mode 100644
index 0000000..899a713
--- /dev/null
+++ b/2024.01.16_GUAN_package_learning/common/example_of_try_except.py
@@ -0,0 +1,22 @@
+import guan
+
+def test1(a, b):
+    print(a)
+    bug_code
+    print(b)
+    return 'return_message1'
+
+result1 = guan.try_except(test1, 10, b=20)
+print(result1)
+
+print()
+
+@guan.try_decorator
+def test2(a, b):
+    print(a)
+    bug_code
+    print(b)
+    return 'return_message2'
+    
+result2 = test2(100, b=200)
+print(result2)
\ No newline at end of file