National Day is a national holiday established by a country to commemorate the country itself.
They are usually the independence of the country, the signing of the constitution, the birthday of the head of state or any other significant anniversary; Some are the country's patron saint's day.
In ancient China, the emperor's accession to the throne and his birthday were called "National Day".
Today, China's National Day refers specifically to the anniversary of the founding of the People's Republic of China on oct 1.
The general office of the state council of China will be closed for 7 days on Oct. 1.