an old head on young shoulders

warning taken from the overturned cart ahead - fù chē zhī guǐ

Fried String - jiān jiāo xù xián

awakened - huò rán dà wù

turn out in full strength - qīng cháo chū dòng

Up the ladder - shàng gān duō tī

well-informed - xiāo xī líng tōng

brazenfaced - xián pí lài liǎn

have no leisure time - bù huáng níng xī

I'm too busy to get along with others - lù lù guǎ hé

boundless - yī wàng wú yín