My friends and I are not in the same province, one in the south and the other in the north. Can we travel with a group?

You can find the same product of the same travel agency on the flying pig, which is no problem. After that, you just need to give him your ID card and your friend's ID card, and they will help you book train tickets or plane tickets to your destination respectively, and then you can meet at your destination. There's nothing wrong with that.