After graduating from the Department of Economics at Peking University in 1955, I stayed on at the department as an assistant to the professors, specifically as an assistant to Professor Zhou Binglin, who was teaching international economic history at the time, helping him to translate papers in foreign journals of economic history and organize research materials. My research on cultural issues also started at this time. In those years, I often went to Professor Zhou’s house. He lived in the faculty housing at Yandongyuan in Peking University and, when free, I would tell him about my experiences in data collation.