Emperor Taizong of Tang said: "History serves as a mirror, revealing the rise and fall of dynasties." After much contemplation, I decided to write this article to summarize the golden words I ignored along the way of repeated margin calls, and to reminisce about my former self, full of boundless courage and high spirits. Rereading my past writings always feels unfamiliar—was that person who resolutely shorted Chinese concept shares and defied the market trend really me? Old Gu is aging—can he still eat? Fat Dudu Baoweimen: That's right, I'm the one who went all-in on Chinese concept stocks. A raging bull doesn't need logic because logic itself doesn't care about the empirical world, and the caution bred from past experience...