(It tells a story: before I was 35, I worked for McKinsey consulting and met the most severe challenge in my life. Guess what saved me? Is it the youngest person in history to pass the University CPA examination? Or are there suggestions from many elites from several Fortune 500 companies? Or is it the diligence of being called "express train", leading among peers and "ultimate top student"?The answer is No. The details are explained in Chapter 3 of "winning horse and horse teaching you to improve your thinking ability". What saved me from the crisis was the intelligence game I loved since I was a child.)