People take part in a memorial ceremony for Laozi (or Lao-tzu, Lao-tse 604-531 BC) 2,587th birth anniversary at Taiqing Palace in Luyi county, Central China's Henan province, March 23, 2016. Laozi, best known as the author of the Tao Te Ching, is traditionally considered as the founder of Taoism. [Photo/Xinhua]