"I have nothing but my hands" Ouyang Xiu's Oil Salesman, "Make a thousand songs before you know your bosom friend, and watch a thousand swords before you know your instrument" Liu Xie's "Wen Xin Diao Long Zhi Yin", a good horse riding, talent training-there is a folk proverb that a person can do it once, and it is already a hundred; People can do it in ten ways, there are thousands. Can do this, no matter how stupid is wise, no matter how soft is strong-the golden mean teaches immortals, but the skillful can't pass the door of scholars-Zhuangzi.