`` In the 1930s , Shi was a strong supporter of the Human Rights Defense Alliance established by Madam Soong Qing Ling . Soong Qing Ling was the second wife of revolutionary leader Dr Sun Yat-sen , with Cai Yuanpei and Lu Xun . '' `` In the 1930s , Shi was a strong supporter of the Human Rights Defense Alliance established by Madam Soong Qing Ling , the second wife of revolutionary leader Dr Sun Yat-sen , with Cai Yuanpei and Lu Xun . ''