Time: February 3
(lunar December 20).
Place: Thanh Mai
Commune, Thanh Oai District, Ha Tay Province.
Feature: The
festival honours Chieftain Ha Khoi who assisted Dinh Bo Linh (later King Dinh
Tien Hoang, the 10th century) in wiping out warlord Do Canh Thac from Thanh Oai
District. At the festival, worshipping ceremonies, Chinese chess and cock
fighting are held.