There is a Putonghua training class at Airport Avenue 1687, Longwan District, Wenzhou. According to relevant public information, the Putonghua training class at Airport Avenue 1687 is taught in small classes, and 2-4 people can start classes and teach by hand to ensure that each student can have more interaction with the teacher. So there is a Putonghua training class at No.687 Airport Avenue/KLOC-0, Longwan District, Wenzhou.