The quality is so great, everything is very very good, from the support of the staff to the quality of service, it is the most valuable money, not to be missed when coming to Beijing, although it is quite crowded because it is a country of billions of people.
Traveloka should add that after booking tickets, just go straight in and bring your passport to Universal, the door will automatically scan the passport number and face matching the registration information to open the door (if not, you can ask the staff to enter the passport code), no need to exchange tickets at all