Answer
Taiwan's official flag.
The national flag of the Republic of China, also known as the Blue Sky, White Sun, and a Wholly Red Earth (青天白日滿地紅) and retroactively the Nationalist Flag of China, now more commonly known as the Flag of Taiwan, consists of a red field with a blue canton bearing a white disk surrounded by twelve triangles; said symbols symbolize the sun and rays of light emanating from it, respectively.