Green,Green Grass of Home (1982)

"Lu Danian (played by Zhong Zhentao) came to Neiwan to take the place of teaching for his sister who was about to go abroad. Under his sister's arrangement, he moved into the second floor of the home of Chen Suyun (played by Jiang Ling), a primary school music teacher. Danian serves as the class teacher of the fourth grade Zhong class. In class, he has to deal with the notoriously naughty "Three Musketeers" on the one hand, and at the same time, he also cares about his parents..."