The answer upstairs didn't take into account the price. I will also make a copy of the public comment. No offense, but the answer for everyone should be based on everyone's needs. . .
Quanjude, a roast duck, is of course the most famous, but I prefer to eat a cheap shop, which is thinner. The cheap shop is a stewing stove, which is different from Quanjude's practice. If you want to make it cheaper, the cheap shop is very good. Quanjude's branch and Qianmen's are not very good, so be careful when choosing. . .
For hot pot, if you are a foreigner, of course, try the copper pot in old Beijing. The best one is Jubaoyuan, but go early because there will be a queue. Xiangyu Zhai in Drum Tower is also great and cheap. It's a shop opened by old Beijing grandpa. . . Haidilao is very popular, but it is not a hot pot in Beijing, and the team of Haidilao really can't afford it. It may not be eaten for 2 hours, so why bother? . .
If you want to have special snacks in Beijing, you should go to Jiumen Snack in Houhai, Huatiandiwai Snack in Di 'anmen and Huguo Temple Snack in Xinjiekou, and that's all. Jiumen Snack is recommended, which has more meat. . . If you eat near Houhai of Gulou, I can help you design a food route. I'll ask you if you have other questions. . .
In addition, to arrange your time reasonably, you have to consider the problems of traffic jams and waiting. There are people everywhere in Beijing now. . .