Less than 10 people. The number of trainees shall not exceed 80, and the annual number of trainees shall not exceed 240; If the training unit is a third-class first-class hospital, the number of trainees per class shall not exceed 100, and the number of trainees per year shall not exceed 300; Chinese medical institutions with strong teachers and good hardware conditions such as training venues can appropriately increase the number of trainees, and those with less than 10 cannot start classes separately.