Interest classes in narrow sense and ordinary sense refer to children's interest classes. Simply put, it is an extracurricular organization that allows children to acquire knowledge, improve their ability, learn expertise, cultivate interest and get happiness outside the formal school classroom. Broadly speaking, interest classes can refer to collective learning or activity organizations of all ages for a certain hobby spontaneously or established by specialized institutions.
Neijiang, known as Han 'an in ancient times, also known as Sweet City, is a prefecture-level city under the jurisdiction of Sichuan Province. It is located in the southeast of Sichuan, in the middle of the lower reaches of Tuojiang River, with Chongqing in the east, Luzhou in the south, Zigong and Meishan in the west and Ziyang in the north. The terrain is dominated by hills, surrounded by low mountains in the southeast and southwest, and it belongs to subtropical humid monsoon climate. Neijiang covers an area of 5385 square kilometers, governs 2 districts and 2 counties, and manages 1 county-level city. According to the data of the seventh census, as of 0: 00 1 1 on June 2020, the resident population of Neijiang City was 3 140678.