diff --git a/2024.01.16_GUAN_package_learning/common/example_of_hermitian.py b/2024.01.16_GUAN_package_learning/common/example_of_hermitian.py
new file mode 100644
index 0000000..46c29e8
--- /dev/null
+++ b/2024.01.16_GUAN_package_learning/common/example_of_hermitian.py
@@ -0,0 +1,16 @@
+# 检查是否为厄米矩阵（相对误差为1e-5)
+import guan
+
+matrix1 = [
+    [2, 1.00001-1j],
+    [1+1j, 1]
+]
+
+print(guan.is_hermitian(matrix1))
+
+matrix2 = [
+    [2, 1.00002-1j],
+    [1+1j, 1]
+]
+
+print(guan.is_hermitian(matrix2))
\ No newline at end of file
diff --git a/2024.01.16_GUAN_package_learning/common/example_of_test.py b/2024.01.16_GUAN_package_learning/example_of_test.py
similarity index 100%
rename from 2024.01.16_GUAN_package_learning/common/example_of_test.py
rename to 2024.01.16_GUAN_package_learning/example_of_test.py