四面楚歌 be besieged on all sides
卧薪尝胆
to undergo self-imposed hardships;
to nurse vengeance;
to endure hardships to accomplish some ambition;
to sleep on brushwood and taste gall
Endure present hardships to revive
草船借箭To Borrow Arrows with Thatched Boats
高山流水1.lofty mountains and flowing water
2.understanding and appreciative friends
高山流水曲目《高山流水》Mountain Torrent