Cai Shaoji, from Zhuhai, Guangdong Province, was the first group of children studying in the United States. He entered the Harvard University to learn laws. He was the Executive Office of Peiyang Bureau of Westernization of Qing Government and Merchants Steamship Company. 
He was appointed as the Executive Office of the Second-class School of Peiyang Western Style College in 1895 and Superintendent of the Haiguan Road in Tianjin and Peiyang Academy from 1908 to 1910.