To make a telephone reservation, you must first apply for a telephone reservation card, which is more difficult to make a phone call. Basically, it will take me 2 or 3 hours to get through. Sometimes you can make an appointment, sometimes you can't. If there is a queue, experts can go at 5 or 6 o'clock. If there are few popular numbers, you have to go early. Some experts are still waiting there all night. Some expert numbers basically disappear after a few minutes of registration.