Traveling Through the 70S, I Have a Sign-In System

This is my first book for a newbie, I will work hard slowly Zhang Xiaoman once traveled through the 1970s, and the same name and surname was Zhang Xiaoman. He was the second eldest son in the family, with an older brother and a younger sister. He went to the mountains and countryside just after graduation and had not found a job. Zhang Xiaoman was informed of going to the countryside as soon as he woke up. When he heard the name of the protagonist on the train, he realized that he was wearing a book. Fortunately, I have a sign-in system, and I can make a fortune quietly.