$PI Grind until your heart is cold and your courage is shattered, grind until you have nothing to cling to in life, grind until you are filled with despair, grind until you endure the pain of letting go, grind until the cries of sorrow fill the land, grind until blood flows like a river. Then you soar to the sky, rising straight to the clouds. Making you regret deeply, regretting your initial decisions, pounding your chest and stomping your feet! As the saying goes, for every general's success, countless bones lie in the ground, it is always against human nature!