醉翁之意不在酒

have ulterior motives

zuì wēng zhī yì bù zài jiǔ ㄗㄨㄟˋ ㄨㄥ ㄓㄧ ㄧˋ ㄅㄨˋ ㄗㄞˋ ㄐㄧㄨˇ