Sadness does not disappear overnight; it takes time to get back onone'sfeet.
悲伤不是一夜之间就能消失不见的，重新振作起来需要时间。
2
"Lifting a rock only to drop it onone'sfeet" is a Chinese folk saying to describe the behaviors of certain fools.
“搬起石头砸自己的脚”，这是中国人形容某些蠢人的行为的一句俗语。
3
Of course between an ideas's out of date and dying out, it is needed to have a driving force, and it is needed to have a man, who lifts stone to drop it onone's own feet.