Someone taught me a lesson, that's their skill! If I can't get over it, that's my incompetence. Sima Yi once said: "If you look at people's shortcomings, there is no one in the world worth befriending; if you look at people's strengths, everyone in the world is my teacher. Along this journey, they are all my teachers." Cut off my naivety, kill my childishness; grind my temperament, train my bones and muscles! What can wake me up is never reasoning, but the wall I hit from experience!2