The origin of this festival follows with the Qin Dynasty, the first unification of China, after the first emperor Qin Shi Huang went to Mount Tai to offer the ritual of sacrifice to heaven. Other records of the Double Sixth festival were found in the Song Dynasty in China. The emperor Zhao Heng (Song Zhen Zong) announced Tian Kuang to be the official name for the Double Sixth festival. He claimed he had Heaven's blessing that he received scriptures from heaven which showed a wise ruler, an enlightened emperor could govern the country and bring peace to everyone, the emperor then set the day he received this sacred revelation to be a holiday that everyone should celebrate it. The emperor Zhao Heng then reconstructed the Dai Temple on Mount Tai, which is the central religious construct of Taoism and the main place to show emperor's authority and relation to heaven. The emperor Zhao Heng then renamed the central building in Dai Temple as Tian Kuang Hall.