120．千里之堤，溃于蚁穴。A small leak will sink a great ship.

　　122．麻雀虽小，五脏俱全。A sparrow may be small but it has all the vital organs.

　　123．天有不测风云。A storm may arise from a clear sky.

　　124．打铁趁热。Strike while the iron is hot.

　　125．疾风知劲草，烈火见真金。Sturdy grass withstands high winds; true gold stands the test of fire.

　　126．强将手下无弱兵。There are no poor soldiers under a good general.

　　127．天无绝人之路。There is always a way out.

　　128．有利必有弊。There is no fire without smoke.

　　129．求学无坦途。There is no royal road to learning.