The reservation of vehicles entering Wutai Mountain shows that SMS is insufficient.

The quantity has reached the upper limit. All tourist vehicles entering the mountain must make an appointment in advance through the official WeChat account of Wutaishan Tourist Service Center. When the number of booked tourists reaches the maximum of 20,000 on that day, the scenic spot will stop booking, and only those who have successfully booked can enter the scenic spot. No reservation will be accepted. If there are not enough text messages, it means that Wutai Mountain has reached the upper limit of tourists. In order to ensure the safety of tourists, tickets will not be sold on the same day.