(Minghui.org) Practitioners gathered at the Liberty Bell historic site in Philadelphia on May 15, 2022, to celebrate the 30th anniversary of Falun Dafa’s introduction to the public. May 13, 2022, is the actual anniversary of the introduction and also marked the 23rd World Falun Dafa Day and the 71st birthday of Mr. Li Hongzhi, the founder of Falun Dafa.