 The Covenant Church of Sweden in 1928 invited him to visit in order to demonstrate their success in attracting charismatic Chinese.En route, he participated in the International Missionary Council Conference in Jerusalem, a convocation that did much to advance the cause of ecumenical Christianity outside Europe and North America.On his return once again to China, Cheng taught Bible and theology at the Hunan Bible Institute in Changsha, Hunan, where he remained from 1929 to 1937, while editing the journal "Evangelism" and conducting widely attended speaking tours that made him nationally prominent.