After the Japanese colonization of Taiwan in 1895, various Japanese Buddhist sectarian traditions arrived in Taiwan and those bringing them actively approached local Buddhist monks and monasteries for cooperation. After 1915, Taiwanese monks separated into two factions: one faction headed to mainland China to study, and the other to Japan. At the same time, indigenous Buddhist traditions in Taiwan gradually developed into four sectarian groups, whose founders all shared deep ties with the Yongquan Temple of Drum Mountain (Gushan) in Fujian province on the mainland. Japanese Buddhists targeted them in particular for co-optation. Venerable Shanhui, who is the focus of this article, was the founder of one of these lineages. Venerable Shanhui was inducted into the Japanese Sōtō Zen sect and was appointed as the abbot of the Lingquan Temple by the head priest (kanchō) of the Sōtō sect in August 1907. Between 1911 and 1939, Venerable Shanhui was active in various chaplaincies in mainland China and Southeast Asia. In December 1933, he returned to Taiwan from Singapore via Hangzhou, where he became president of the Hangzhou Sino-Japanese Buddhist Society. In August 1939, Shanhui accepted the invitation of Narita Hōzui, then abbot of the Sōtō Zen temple Chōtokuin in Shanghai, to leave Taiwan and perform missionary work at temples in central China. This article also examines the existence of two different Hangzhou Sino-Japanese Buddhist societies and Shanhui’s relationship to them.