Recently I was reading RainbowKun's article. Every time  they are more philosophical. I need some time to understand his article. Several times I needed to read it several times to understand what he meant. His views are new every time. I also learned a lot in his article. Every article of RainbowKun has many words, which may make people who see it "skip". But there are a lot of things to learn, and the logic is relatively strong. I admire such a silent and selfless person. Learn from RainbowKun.