There are many ways to make yourself better in the world. People, or just want to constantly improve themselves. Z-capacity is just one of them, all to make themselves better. Why not? People can mix before the age of 30, but you must determine your career direction at the age of 30. At the age of 30, you must bring something: first, know yourself, second, have the ability to concentrate, and third, have English, which is the foundation of the foundation. They can guarantee that you will study in the next ten years and start a second life at the age of 40. The sign of high skill is that no matter who he is, it will take ten years to complete, and he must stay focused during this decade. "