XISHUANGBANNA, CHINA - MARCH 04:  Prince William, Duke of Cambridge smells some local tea as he visits Mengman village on March 4, 2015 in Xishuangbanna, China. Prince William, Duke of Cambridge is on a four day visit to China. He is the most senior royal to visit China since the Queen and Duke of Edinburgh in 1986. His visit follows on from a successful four day visit to Japan.  (Photo by Tim Rooke - Pool/Getty Images)