知己知彼百战百胜 Know your enemy and know yourself.
空中楼阁 castles in the air
金科玉律 the gold rule
奇装异服 a fantastic garb
明辨事非 to distinguish right from wrong
雨后春笋 like bamboo shoots after a spring shower
雨过天青 After a storm comes a calm.
秀才不出门能知天下事 A scholar does not step outside his gate, yet he knows the happenings under the sun.
事实胜于雄辩 Facts are most convincing.
小Car笔记：
garb：打扮，装束，外表 【常用词语】prison garb：囚衣，犯人衣服
shoots：嫩芽 【常用词语】①rice shoots：稻秧苗，禾秧，秧苗 ②bamboo shoots：竹笋
under the sun：天下，究竟