Correct
画脂镂冰
/ huà zhī lòu bīng /
Strokes
Example
Definition
draw on butter or carve on ice―work fruitlessly; work hard but to no avail; waste one's effort
1
Nǐ
你
zhè
这
shì
是
huàzhī
画脂
lòubīng
镂冰
,
túláowúyì
徒劳无益
。
You are wasting your time. It's an entirely futile undertaking.