The difference between external teachers and regular teachers:

1. Different employment methods: External teachers are contract workers, which are not essentially different from ordinary employees of any private enterprise in society. Formal teachers belong to national public officials and are internal staff.

2. Different salary payment methods: regular teachers' salaries are paid by their respective education bureaus or financial departments, commonly known as financial salaries, while external teachers' salaries are paid by the school itself, and the final interpretation right lies with the school.