Original: "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."
Simplified: "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."