何必[hé bì]
(用反问语气表示不必) there is no need; why:
例:何必当初
Why act in this way at that time?
都是自己人,何必客气呢?
We are all good friends; why stand on ceremony?
何必去那么早。
There is no need to go so early.
何必问他?
What's the need to ask him?
开个玩笑嘛,何必当真呢?
I was only joking. Why take it so seriously?