About 20 thousand If you have more than 50 people, especially around 100, this price is the most effective, because the more people, the more difficult it is to ensure the training effect, and it is difficult for the general teacher to guarantee the control of the venue when giving lectures in a big venue. If you want to control the field, you must find an experienced teacher, and the price will naturally be high. The other is the consideration of service. Add up to 20 thousand.