《Can't hide a secret》

When Sang Zhi was in elementary school, her teacher frequently invited her parents. In order to solve the problem, Sang Zhi decided to ask her brother to take the blame. However, the brother and sister started arguing with each other when they met, so they had no choice but to ask for help from Duan Jiaxu, his brother's roommate who came to play at home.Under coercion, Duan Jiaxu helped Sang Zhi go to school to meet the teacher, and the two became friends. From then on, Duan Jiaxu cherished Sang Zhi as his own sister.