Lijiang is definitely a must-see in Yunnan. Although it has been commercialized, it is still very meaningful for friends who have never been there. If time is short, take Lijiang as the center to play around, such as Shangri-La and other places. In Lijiang, you can find many people going together.
Dali and Lijiang have similar feelings. If time is short, you can take a bus directly from Kunming to Lijiang, and you can feel the life in Lijiang in 5.6 days.