China’s first national flag - yellow field with a blue dragon - was flown during Qing Dynasty which ruled China from 1644 to 1912.
The Five-coloured flag was used as a national flag from 1912 to 1928.
The Flag of the Republic of China (Blue Sky, White Sun, and a Wholly Red Earth) flown during 1928 - 1949 period is red with a navy blue canton bearing a white sun with twelve triangular rays.
Current Chinese national flag has red field with a large yellow five-pointed star and four smaller yellow five-pointed stars (arranged in a vertical arc toward the middle of the flag) in the upper hoist-side corner.