Song Zhenzhong, child internee and revolutionary martyr (died 1949)

Song Zhenzhong, popularly known as Little Radish Head, was the son of Chinese Communist Party members Song Qiyun and Xu Linxia. Held by the Kuomintang for the majority of his life, he was killed together with his parents as part of a mass killing of detainees. He has been identified as "China's youngest martyr", and featured extensively in film and literature. He has also been commemorated with multiple monuments.

March 15 is the 74th day of the year in the Gregorian calendar; 291 days remain until the end of the year.