diff --git a/examples/1D_laxshocktube/README.md b/examples/1D_laxshocktube/README.md
index 1d0cd9f2e..5e5f5a0e3 100644
--- a/examples/1D_laxshocktube/README.md
+++ b/examples/1D_laxshocktube/README.md
@@ -1,3 +1,11 @@
 # Lax shock tube problem (1D)
 
-Reference: P. D. Lax, Weak solutions of nonlinear hyperbolic equations and their numerical computation, Communications on pure and applied mathematics 7 (1) (1954) 159–193.
\ No newline at end of file
+Reference: P. D. Lax, Weak solutions of nonlinear hyperbolic equations and their numerical computation, Communications on pure and applied mathematics 7 (1) (1954) 159–193.
+
+## Initial Condition
+
+![Initial Condition](initial.png)
+
+## Result
+
+![Result](result.png)
diff --git a/examples/1D_laxshocktube/case.py b/examples/1D_laxshocktube/case.py
index ba12d16de..a9365e806 100644
--- a/examples/1D_laxshocktube/case.py
+++ b/examples/1D_laxshocktube/case.py
@@ -53,7 +53,7 @@
     'format'                       : 1,
     'precision'                    : 2,
     'prim_vars_wrt'                :'T',
-    'parallel_io'                  :'T',
+    'parallel_io'                  :'F',
     # ==========================================================================
                                                             
     # Patch 1 L ================================================================
diff --git a/examples/1D_laxshocktube/initial.png b/examples/1D_laxshocktube/initial.png
new file mode 100644
index 000000000..daef4593e
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diff --git a/examples/1D_laxshocktube/result.png b/examples/1D_laxshocktube/result.png
new file mode 100644
index 000000000..d5fa128fa
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