" National Day", in celebration of the state, the first in the Western Jin dynasty. Western Jin Dynasty writer Lu Ji in" five other princes theory" a paper once a" national day alone for its benefit, the main worry about Mo and its harm " records, China's feudal era, the national celebration event, a great over-the emperor ascended the throne, birthday ( birthday of the Qing Dynasty emperor called for long live Festival ). Thus our country ancient times the emperor ascended the throne, the birthday is called" national day". Today is the anniversary of the founding of state for national day.