There is no high school homework answering guidance. According to the official website of Zi Jin, the introduction of value-added services can be found by sliding down the homepage. According to the inquiry, the Zi Jin Senior Teaching and Research Group focuses on online tutoring in primary and junior high schools 1 to 1, but there is no tutoring in senior high schools for the time being. Homework, "Ci Hai" explains: activities to complete the established tasks in learning, while "Education Dictionary" divides the homework to complete the learning tasks into two categories: classroom homework and extracurricular homework.