Beijing International Travel Service is a good choice. They provide 98% satisfaction with Huairou tourist routes, which is an AAAAA international travel agency. In addition, the tourist routes they provide include Qinglong Gorge, a 4A-level scenic spot in Huairou District, Beijing, where there are not only unique natural beauty, but also many amusement projects.

The above is just a brief introduction I provided. Choosing a specific tour group also requires you to make a decision according to your specific needs and budget.