During the 2015 stock market crash, my tens of billions of funds were wiped out by the circuit breaker. I, who was jokingly called the "financial butcher" in the industry, became a laughing stock overnight. Ten years later, I came back with a "low-volatility, long-term holding" strategy, and my peers scoffed: "What does a has-been antique know about the new economy?" Until my fund bucked the trend and grew by 300% in the bear market.