It's true. Teacher's qualification certificate is permanent and effective, and it is also long-term and effective if you don't engage in teaching. However, in the establishment of teachers, it is necessary to register once every three years, that is, once every five years. The difference between the teacher qualification certificate issued by 1999 and now is that the content is handwritten and stamped, but the qualification certificates issued by the Education Bureau are all true, which is no different from the teacher qualification certificate passed in 2022. As long as it is registered regularly according to the regulations, it has always been officially recognized.