It is difficult to realize that "graduate students can directly evaluate lecturers without any additional conditions after one year", for example, they must undergo at least pre-job training, teacher qualification certificate or teaching assistant qualification certificate before they can be qualified to evaluate (recognize) lecturers after one year. With luck, two years or so should be about the same.
Also, the competition for professional titles is fierce now, and whether there are any additional conditions depends on local policies, which are nothing more than English, computers, papers and published textbooks. Postgraduates have advantages in higher vocational colleges, but sometimes the reality is cruel. . Good luck ~