diff --git a/API_Reference.py b/API_Reference.py
index f486812..f106e88 100644
--- a/API_Reference.py
+++ b/API_Reference.py
@@ -331,6 +331,8 @@ degenerate_k_array, degenerate_eigenvalue_array = guan.find_degenerate_points(k_
 
 guan.batch_reading_and_plotting(directory, xlabel='x', ylabel='y')
 
+guan.write_file_list_in_markdown(directory, filename='a', reverse_positive_or_negative=1, starting_from_h1=None, banned_type=[], divided_line=None, show_second_number=None, show_third_number=None)
+
 guan.move_all_files_to_root_directory(directory)
 
 guan.change_directory_by_replacement(current_key_word='code', new_key_word='data')
diff --git a/PyPI/setup.cfg b/PyPI/setup.cfg
index ac0d475..4beecb9 100644
--- a/PyPI/setup.cfg
+++ b/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.0.128
+version = 0.0.129
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/PyPI/src/guan.egg-info/PKG-INFO b/PyPI/src/guan.egg-info/PKG-INFO
index c9992b0..fb0ac72 100644
--- a/PyPI/src/guan.egg-info/PKG-INFO
+++ b/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: guan
-Version: 0.0.128
+Version: 0.0.129
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/PyPI/src/guan/__init__.py b/PyPI/src/guan/__init__.py
index 31a6e21..d7443dd 100644
--- a/PyPI/src/guan/__init__.py
+++ b/PyPI/src/guan/__init__.py
@@ -2,7 +2,7 @@
 
 # With this package, you can calculate band structures, density of states, quantum transport and topological invariant of tight-binding models by invoking the functions you need. Other frequently used functions are also integrated in this package, such as file reading/writing, figure plotting, data processing.
 
-# The current version is guan-0.0.128, updated on September 07, 2022.
+# The current version is guan-0.0.129, updated on September 08, 2022.
 
 # Installation: pip install --upgrade guan
 
@@ -2538,6 +2538,75 @@ def batch_reading_and_plotting(directory, xlabel='x', ylabel='y'):
                 x_array, y_array = guan.read_one_dimensional_data(filename=filename)
                 guan.plot(x_array, y_array, xlabel=xlabel, ylabel=ylabel, title=filename, show=0, save=1, filename=filename)
 
+def write_file_list_in_markdown(directory, filename='a', reverse_positive_or_negative=1, starting_from_h1=None, banned_type=[], divided_line=None, show_second_number=None, show_third_number=None): 
+    import os
+    f = open(filename+'.md', 'w', encoding="utf-8")
+    filenames1 = os.listdir(directory)
+    u0 = 0
+    for filename1 in filenames1[::reverse_positive_or_negative]:
+        filename1_with_path = os.path.join(directory,filename1) 
+        if os.path.isfile(filename1_with_path):
+            if os.path.splitext(filename1)[1] not in banned_type:
+                f.write('+ '+str(os.path.splitext(filename1)[0])+'\n')
+        else:
+            u0 += 1
+            if divided_line != None and u0 != 1:
+                f.write('\n--------\n\n')
+            if starting_from_h1 == None:
+                f.write('#')
+            f.write('# '+str(filename1)+'\n')
+
+            filenames2 = os.listdir(filename1_with_path) 
+            i0 = 0     
+            for filename2 in filenames2[::reverse_positive_or_negative]:
+                filename2_with_path = os.path.join(directory, filename1, filename2) 
+                if os.path.isfile(filename2_with_path):
+                    f.write('+ '+str(os.path.splitext(filename2)[0])+'\n')
+                else: 
+                    i0 += 1
+                    if starting_from_h1 == None:
+                        f.write('#')
+                    if show_second_number != None:
+                        f.write('## '+str(i0)+'. '+str(filename2)+'\n')
+                    else:
+                        f.write('## '+str(filename2)+'\n')
+                    
+                    j0 = 0
+                    filenames3 = os.listdir(filename2_with_path)
+                    for filename3 in filenames3[::reverse_positive_or_negative]:
+                        filename3_with_path = os.path.join(directory, filename1, filename2, filename3) 
+                        if os.path.isfile(filename3_with_path): 
+                            f.write('+ '+str(os.path.splitext(filename3)[0])+'\n')
+                        else:
+                            j0 += 1
+                            if starting_from_h1 == None:
+                                f.write('#')
+                            if show_third_number != None:
+                                f.write('### ('+str(j0)+') '+str(filename3)+'\n')
+                            else:
+                                f.write('### '+str(filename3)+'\n')
+
+                            filenames4 = os.listdir(filename3_with_path)
+                            for filename4 in filenames4[::reverse_positive_or_negative]:
+                                filename4_with_path = os.path.join(directory, filename1, filename2, filename3, filename4) 
+                                if os.path.isfile(filename4_with_path):
+                                    f.write('+ '+str(os.path.splitext(filename4)[0])+'\n')
+                                else: 
+                                    if starting_from_h1 == None:
+                                        f.write('#')
+                                    f.write('#### '+str(filename4)+'\n')
+
+                                    filenames5 = os.listdir(filename4_with_path)
+                                    for filename5 in filenames5[::reverse_positive_or_negative]:
+                                        filename5_with_path = os.path.join(directory, filename1, filename2, filename3, filename4, filename5) 
+                                        if os.path.isfile(filename5_with_path): 
+                                            f.write('+ '+str(os.path.splitext(filename5)[0])+'\n')
+                                        else:
+                                            if starting_from_h1 == None:
+                                                f.write('#')
+                                            f.write('##### '+str(filename5)+'\n')
+    f.close()
+
 def move_all_files_to_root_directory(directory):
     import os
     import shutil