Born in Yilan, Taiwan. Ran studid watercolor painting from his mentor, Ishikawa Kinichiro. Then he went to Japan and had been invited to many exhibitions in Tokyo and Taiwan. In 1929, he was named honorary member of the British Royal Watercolor Association and was invited as a guest lecturer in Europe, North America and Asia. He then became the editor of Taiwan Pictoral Magazine and Good Harvest Magazine. Ran was selected as one of the top ten watercolor artist in the world by the critics in 1971. He served as president of China Television System in 1973 and passed away in 1979. Ran specialized in portraiting the local people's life and combining the technique of Chinese Calligraphy and watercolor together to achieve his unique expression of pictorial space. In 1991, National Palace Museum held the memorial exhibition of Ran. In 1998, the National Museum of History in Taipei held the retrospective exhibition of Ran In-ting and also published a catalogue of Ran's collection.