Chinese President Xi Jinping stressed the public's knowledge of the country's Constitution should be enhanced as the country observed the third Constitution Day on Sunday.

The Constitution contains the fundamental rules of the nation and the general regulations for ruling the country and guaranteeing national security, which both the Party and the people must adhere to while advancing the rule of law, President Xi said in an instruction sent to the opening of an exhibition hall in Hangzhou, East China's Zhejiang Province.

The hall features documents relating to the first Constitution of the People's Republic of China, which was drafted in Hangzhou and enacted in 1954.

China's top legislature adopted the current Constitution on Dec 4, 1982, and Constitution Day has been celebrated in China since Dec 4, 2014. Since last year all elected or appointed officials have had to swear a public oath of allegiance to the Constitution.

Promoting greater awareness and education of the Constitution is one of the important tasks of comprehensively ruling the country by law. The exhibition hall is important for the promotion of the Constitution, so that more people are aware of and abide by the nation's laws, according to Xi.