duplication ⇒ 写文章切忌叠床架屋。 Xiě wénzhāng qièjì dié chuáng jià wū. → When you write an essay you should avoid repeating yourself.
爱屋及乌
love me, love my dog ⇒ 他真是爱屋及乌，竟然喜欢上了女友听的音乐。 Tā zhēnshì ài wū jí wū , jìngrán xǐhuān shàng le nǚyǒu tīng de yīnyuè. → This really is a case of love me, love my dog. Now he's suddenly started to like his girlfriend's music.