Different places, like the Chinese Medical Association, a class is three hours. In Guangdong province, a grade is generally 6 hours, and in Guangzhou, a grade is also 6 hours. "Regulations on Continuing Education for Professional and Technical Personnel" Article 8 The time for professional and technical personnel to participate in continuing education shall be no less than 90 hours per year, of which professional subjects shall generally be no less than two thirds of the total hours. Professional and technical personnel to participate in continuing education in the following ways, included in my continuing education hours:

(a) Attending training courses, seminars or refresher courses;

(two) to participate in relevant continuing education practice activities;

(three) to participate in distance education;

(four) to participate in academic conferences, academic lectures, academic visits and other activities;

(five) other ways in accordance with the provisions. The specific measures for determining the mode and hours of continuing education shall be formulated by the administrative departments of human resources and social security of provinces, autonomous regions and municipalities directly under the Central Government.