Well, it depends. If the company clearly defines this right and responsibility in the training management regulations, then it can be fired, otherwise it will not work. Of course, some training teachers are also part-time, which may be the management positions of the company itself, so they have the right as managers, but all dismissal procedures generally have to go back to the human resources department, which is the centralized department for handling employees' entry and departure. It depends on your company's management regulations. There is no standard answer to this.