What happened to Luanping recently? Why do people always talk about Luanping?

As a core area around Beijing, Luanping has a good environment and good industrial development, but its popularity is low. Recently, the first Chengde Tourism Industry Development Conference was held in Luanping, and Diovela Great Wall also held an event called "I helped Luanping make headlines", so Luanping became popular. Luan Ping is really good, and it’s normal for him to become popular.