Do I need a passport and visa to travel to Angkor Thom with a group?

You definitely need to apply for a passport. Go to the Public Security Bureau where you are registered to apply. If you travel with a group, you generally don’t need to apply for a visa yourself, because Cambodia does not refuse visas, so you don’t need to go in person, you can just give it to the travel agency.

To apply for a passport, you just need to prepare your household registration book and ID card, and bring two to three hundred yuan. It is very easy