diff --git a/src/include/client.h b/src/include/client.h
index 6620794..0944096 100644
--- a/src/include/client.h
+++ b/src/include/client.h
@@ -105,7 +105,8 @@ void PreProcessData() {
               }
         }
       }
-  //find all unkown blocks that are adjacnent to clicked blocks
+  //find all unkown blocks that are adjacnent to clicked blocks and prepare for Gaussian Elimination
+  //start Gaussian Elimination
 }
 /**
  * @brief The definition of function MakeBestGuess()