Dear Jos Tames, Greetings from Janet, Top China Travel. Many thanks for your message. I am pleased to help you planning 13 days trip to China including Chengde on May. As you would stay 12 nights in China, could you please let me know is there anywhere you'd like to visit excepting Chengde? Besides, which star hotel do you prefer to stay? 3* Holiday Inn Express or any local managed hotel 4* Holdiay Inn, Novotel or any local managed hotel 5* Crowne Plaza, Hilton or any international chain hotel. Should you have any additional questions, please feel free to contact us.