Actions speak louder than words.
事实胜于雄辩。
Adversity leads to prosperity.
穷则思变。
Adversity makes a man wise, not rich.
逆境出人才。
A fair death honors the whole life.
死得其所，流芳百世。
A faithful friend is hard to find.
知音难觅。
A fall into a pit, a gain in your wit.
吃一堑，长一智。
A fox may grow gray, but never good.
江山易改，本性难移。
A friend in need is a friend indeed.
患难见真情。
A friend is easier lost than found.
得朋友难，失朋友易。
A friend is never known till a man has need.
需要之时方知友。
A friend without faults will never be found.
没有十全十美的朋友。
'After you' is good manners.
“您先请”是礼貌。