historical work called the Records of the Three Kingdoms (三國志). Worshipping events with the celebration of singing and dancing was recorded in Buyeo during what was the 12th month () of the Chinese calendar at that time. The earliest records of Seollal celebrations are included in the 7th century Chinese historical works, called the Book of Sui (隋書) and the Old Book of Tang (舊唐書), containing excerpts of national rituals and festivals in Silla in the 7th century. Discontinued practices for worshipping deities from the native folk religion such as the ones of the sun and moon are also mentioned. The oldest surviving Korean records of Seollal can be found in the (三國遺事), compiled in the 13th century. During the rule of Bicheo (also called Soji), 21st ruler of Silla, in 488 AD a number of unfortunate events surrounding an affair between a high ranking person responsible for shrines (宮主) and a noble, that coincided with a specific lineup of Zodiac signs led to the day also being nicknamed Daldo (怛忉). The customs and ceremonies for Seollal have been passed onto in time and continued to Goryeo, Joseon as well as the modern day. By the 13th century, the Korean new year was one of the nine major national festivals of Goryeo, according to the . Japanese ban and re-establishment By the 1890s, Korea was increasingly politically intimidated by the Empire of Japan after Chinese suzerainty (under the Qing Dynasty at the time) over Korea severely diminished after the First Sino-Japanese War. By 1907, celebrating was banned. Korea's last de jure emperor, Sunjong, under intense pressure by the Japanese, had no choice to enact the ban despite reluctance by himself and the Korean people. The Japanese rulers had forced the Koreans to do what they say as part of cultural assimilation and genocide. In 1910, Korea was officially annexed by the Empire of Japan after years of war, intimidation and political machinations. During this period, the Japanese reiterated the prohibition of celebrating . The Japanese rulers set the official Korean New Year to follow the Japanese New Year which was set at the first day of the Gregorian calendar since the Meiji Restoration. The day is called , and the old new year became . After the liberation of Korea in 1945 and prior to the Korean War in 1950, the provisional Korean government designated the period from 1 to