diff --git a/lang/zh/notebooks/tests/test_sp_methods.py b/lang/zh/notebooks/tests/test_sp_methods.py
new file mode 100644
index 0000000..b37a3fd
--- /dev/null
+++ b/lang/zh/notebooks/tests/test_sp_methods.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Test networkx shortest paths methods.
+Created on Tue Oct  9 14:49:09 2018
+
+@author: ljia
+"""
+
+import networkx as nx
+
+g = nx.Graph()
+g.add_edge(1, 2)
+g.add_edge(3, 2)
+g.add_edge(1, 4)
+g.add_edge(3, 4)
+p1 = nx.shortest_path(g, 1, 3)
+p1 = [p1]
+p2 = list(nx.all_shortest_paths(g, 1, 3))
+p1 += p2
+pr = [sp[::-1] for sp in p1]
+nx.draw(g)
\ No newline at end of file