It should be noted that you don't have to go out of the Forbidden City except for eating in the visitor center of the Forbidden City. The theme is lunch, so it is suggested to eat in the tourist service center or bring some food by yourself.
Tour route of the Forbidden City: Take Donghuamen to Shenwumen as an example. The tour time is between 2-7 hours, and the length of time depends on the meticulous degree of the tour and personal schedule. When visiting, we should master a rule, that is, take the central axis as the main axis, and then visit the East, West and Six Palaces with a butterfly-shaped cross curve.
Let's look at the buildings on the central axis. After entering from the meridian gate, there are Taihe Gate, Zhonghe Hall, Baohe Hall, Gan Qing Palace, Jiaotai Hall, Kunning Palace and Huangjiayuan Forest in turn, and then exit from Shenwumen. The East Six Palaces are Ren Jing Palace, Chenggan Palace, Zhongcui Palace, Jingyang Palace, Yonghe Palace and Yan Xi Palace. At present, the East Sixth Palace is mainly a special museum.
Besides visiting various palace buildings, you can also see various exhibitions. Wumen and Yanchilou have the largest modern exhibition halls in the Forbidden City, and often provide some high-standard special exhibitions. Wenhua Hall is a painting and calligraphy hall, Cining Palace is mainly a sculpture hall, Fengxian Hall displays clocks and watches, and Ningshou Palace is a treasure hall and a stone drum hall.