Unreasonable. The training fee charged by Daqing Hua Xun Technology Co., Ltd. is unreasonable, so the company can't charge the training fee. However, if the employee resigns before the expiration of the service period, the company may demand compensation for liquidated damages. The training of employees is to better complete the work and create greater value for the company. The company's training fee is a hidden and necessary investment, and it is unreasonable to pass it on to employees. Therefore, it is unreasonable for Daqing Hua Xun Technology Co., Ltd. to charge training fees.