"Godsent Pu'er, Tea Source of the World" Yunnan Puer Original Folk Custom Exhibition kicked off on July 26 during 2015 China Day in Yuyuan, Shanghai. The exhibition will run for 15 days till August 9. Through original folk custom shows, presentations and sales of characteristic highland agricultural products, and presentations of intangible cultural heritage, the exhibition will treat Shanghai citizens to mellow Pu'er tea and melodious guitar performance, and unveil the mystery of Pu'er.