台Taivo A Taiwan Mandarin dictionary

畫蛇添足

huàshétiānzú

ㄏㄨㄚˋ ㄕㄜˊ ㄊㄧㄢㄗㄨˊ

Simplified 画蛇添足

1lit. draw legs on a snake (idiom); fig. to ruin the effect by adding sth superfluous
2to overdo it

Example

不要畫蛇添足。

búyào huàshétiānzú

Let well alone.

Keep 畫蛇添足 and it comes back until you know it.