便不会

then would not

→ 便
phrase Rare #25,970
then would not Used in conditional sentences to mean that something would not happen as a result. 便 means “then” and is somewhat formal or literary.
CH: 如果你早点出发,便不会迟到。
EN: If you had left earlier, you wouldn’t have been late.

你懂便不会在这儿

If you knew how to fly, you wouldn’t be squatting here!

— 阿飞正传 (1990)

如果你得了昨晚你今晚便不会在这儿

If you had survived last night, you wouldn't be here tonight.

— 阿飞正传 (1990)