The age of 18 is a dividing line on the road of life. It marks that a person has moved from immaturity to maturity. If so. Yesterday you were still a child who could be coquettish and willful in the arms of your parents, who could make mistakes and be forgiven. Then after you turn 18, you have become an "adult" who must be responsible for yourself and others. What you have to face will also be a brand new life. If you don't want to be swallowed up by the "storm" of society, then you must actively adapt to and learn the rules of the "game" in social life, that is, actively figure out and eventually understand the ways of the world. In this way, you can go with the flow. Stay ahead of others. This book starts from many aspects such as life, work, mentality, social connections, language, life, etiquette, thinking, common mistakes, etc., And elaborates on the worldly rules that young people after the age of 18 should follow in social life.