This flag was officially unveiled in Beijing's Tiananmen Square on October 1, 1949 which was the formal announcement of the founding of the People's Republic of China. 

The color red symbolizes the spirit of the revolution and the five stars signify the unity of the Chinese people under the leadership of the Chinese Communist Party. 

Anthem - The March of the Volunteers

Landmark - Great Wall of China

Flower - The Chinese Peony