Chinese people from all over the world will gather on March 24 in Xinzheng, central China's Henan province, to attend an annual ritual to worship their ancestor, Emperor Huang or Huangdi. Honorary chairman of the Kuomintang (KMT) Party Wu Po-hsiung will lead a delegation to attend the worship ritual in Henan province, according to Xinhua News Agency. Xinzheng, a county-level satellite city of Zhengzhou, capital of Henan, is the birthplace of the Yellow Emperor (Huang Di), who is widely recognized as a common ancestor of all Han Chinese. The tradition of worshipping ancestors on the mythical leader's birthday, which is on March 3 according to the lunar calendar and falls on Mar 24 this year, dates back to the Spring and Autumn Period (BC770-BC476). The legend has it that the Yellow Emperor invented the cart, boat, bow and arrow, as well as traditional Chinese medicine. The seventh China Henan International Investment Trade Fair will be held from Mar 23 to Mar 27 in Zhengzhou, capital of Henan province, according to Henan Daily. Many of the participants of the trade fair will also attend the worship ritual.