Excuse me, how much is a regular travel agency's 2-day tour from Changchun to Changbai Mountain?

There is no need to find a travel agency. Take a bus or train from Changchun to Baihe. When you get to Baihe, take 40 yuan to find a bus. When you get to the north gate of Changbai Mountain, just buy a ticket and go in. If you need accommodation, just find a small hotel or a family hotel. The problem of eating is easy to solve, and there are restaurants everywhere. There is no need to spend some money on travel agencies. Go to the travel agency to arrange a shopping for you, or if you are not satisfied with where you live, you have nowhere to go.

If there is anything you don't understand or need, I will give you a website for advice. The website is www.jl-cbs.com, a well-known family hotel network, which will arrange the whole journey for you.