In Beijing in the early 1970s, busy with "making revolution", adults had no time to pay attention to children. In addition, the school was closed and there was nothing to do. Young people, with the boys in the military compound as the prominent representatives, made fun of themselves and squandered excessive hormones by making fun of themselves, fighting, making trouble, and patting women. Ma Xiaojun (Xia Yu) is such a young man. One of his hobbies is to sneak in and play while no one else us...