This paper introduces the family and business networks as well as philanthropist activities of the prominent merchant Guo Chun-yang (Kwik Djoen Eng) (1860-1935). Compared with his influence in trade and cultural activities in the Dutch East Indies, Japanese Taiwan, British Hong Kong and Japan, the records about his life and career are limited. To contribute to a comprehensive understanding about Guo, this paper is based on my oral interviews with Guo’s descendants in Amoy, Taiwan, Hong Kong and Singapore since 2003. My interviewees--including Guo’s adopted son, grant daughters, as well as their extended families--provide rich information about Guo’s personality, business strategies, social networks, and political connections. Through obtaining trust with my interviewees, I also learn about Guo’s family arrangements, and their descendants’ different choices of nationalities after the end of World War II. I hope that this research can enrich our understanding about the life and achievement of Guo Chun-yang and his legacies.