Chen Yuan
Ch'ien Mu or Qian Mu (; 30 July 1895 – 30 August 1990) was a Chinese historian, philosopher and writer. He is considered to be one of the greatest historians and philosophers of 20th-century China. Ch'ien, together with Lü Simian, Chen Yinke and Chen Yuan, was known as the "Four Greatest Historians" of Modern China (現代四大史學家).