Why did Haiquan Middle School recruit teachers again?

Haiquan Middle School re-recruits teachers because some teachers have reached retirement age. According to the recruitment information released by official website of Haiquan Middle School, because some teachers have reached retirement age and there are vacancies in the school, Haiquan Middle School needs to recruit teachers again. Haiquan Middle School, founded in 1999, is a full-time boarding private school which integrates primary school, junior high school and senior high school with the approval of provincial and municipal education administrative departments and founded by Mr. Wang Haiquan, chairman of Xinjiang Haiquan Hardware, Electrical and Chemical Co., Ltd.