 My view is that when you are 20 to 30 years old, you should follow a good boss, join a good company to learn how to do things properly. When you're 30 to 40 years old, if you want to do something yourself, just do it. You still can't afford to lose, to fail. But when you're 40 to 50 years old, my suggestion is that you should do things that you are good at. And not do things that, oh, that's very interesting, I want to try something new. It's a bit dangerous more. When you're 50 to 60 years old, spending time training and developing young people, the next generation, when you're over 60 years old, better stay with your grandchildren.