I told my online friend that I know me and I prefer to explore others, and she said "I don't think you really know yourself either, fully understand yourself before exploring others! Your attention span is constant!" I replied: it makes sense, energy time is very limited, the tide on the Qiantang River letter to come, today to know I am me. Lu Zhishen ended up learning about himself just before he was going to die in his life, because upwardly mobile people will be fickle in their learning, have suffered losses, and be forced to change. I think this is true of all people. There is no end to exploring yourself.