May 19 is China Tourism Day every year, which is an illegal holiday.
The festival originated on May 19, 2006. Ma Shaoqin of Ninghai, Zhejiang proposed to set up "China Tourism Day" in the name of Xu Xiake Travel Club in Ninghai, and suggested that the opening day of the first diary of Xu Xiake's Travels (May 19) be named China Tourism Day.