1、A bosom friend afar brings a distant land near.

海内存知己，天涯若比邻。

2、A common danger causes common action.

同舟共济。

3、A contented mind is a continual/perpetual feast.

知足常乐。

4、A fall into the pit, a gain in your wit.

吃一堑，长一智。

5、A guest should suit the convenience of the host.

客随主便。

6、A letter from home is a priceless treasure.

家书抵万金。

7、All rivers run into the sea.

殊途同归。

8、All time is no time when it is past.

机不可失，时不再来。

9、An apple a day keeps the doctor away.

日啖一苹果，健康不求医。

10、As heroes think, so thought Bruce.

英雄所见略同。

11、A young idler, an old beggar.

少壮不努力，老大徒伤悲。

12、Behind the mountains there are people to be found.

天外有天，山外有山，人外有人。/ 强中更有强中手。

13、Bad luck often brings good luck.

塞翁失马，焉知非福。