借尸还魂（借屍還魂）　

◎ 借尸还魂 jièshī-huánhún

[(of a dead person‘s soul)find reincarnation in another‘s corpse——(of sth.evil)revive in a new guise] 迷信传说人死后灵魂还会借别人的尸体复活。比喻陈腐的旧事物改头换面,在冠冕堂皇的口号下再一次冒出来