As a travel website, a well-known travel website in China, there are many ways to make money. Here are a few simple examples: hotel reservation discount price difference, hotel check-in fee, VIP customers, air ticket reservation discount price difference, advertising cooperation, travel agency check-in fee, etc. Basically, it's the middle price you can think of (that is, what we call making a difference). As for the discussion of profit model, there will be different differences with different stages of website development, and this piece needs to be studied by a special team.
I hope my answer can help you.