[dōng shān zài qǐ]
（比喻失势之后重新恢复地位） stage a comeback; bob up like a cork; make a comeback; return to a previous stage; return to power; resume one's former position; regain political power after one has lost it; start from scratch all over again
That fellow bobs up like a cork.
那个人经过患难，东山再起。