fix clean code issues
fix clean code issues

raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth,raydeng83/growth