What does it mean to recruit teachers for different positions?

You can only apply for one position. According to the information of official website, the State Education Bureau, teacher recruitment by post means that only one post can be registered, and teachers need to make effective choices according to their teacher qualification certificates and subjects. There is no unified examination form and syllabus in the whole country, and some provinces implement unified examinations throughout the province, but most provinces are still organized by district and county education bureaus and personnel bureaus.