Those who love me die for me, and those who love me want me dead. The beautiful rivers and mountains are buried with their faces, and the forgotten rivers are no longer full of crazy thoughts; the blue water above is poor and the yellow spring is falling, and the flowers and leaves on the other side will never be seen! When you need me, I stand in front of you and block the ruthless sword for you. If you don't need me anymore, I will leave your world and never appear again!