was he christian?
Yes, he was converted to Christianity.
Sun Yat-sen
conversion to Christianity 
from where do taiwanese indigenous peoples originated? Taiwan what are its ethnic groups? Philippines, Malaysia, Indonesia etc can you mention any of its surname? Han and Pan is there any day celebrated after their name? UNANSWERABLE by whom were they ruled during 1945 to 87? Chinese Nationalist Party (Kuomintang, or KMT) who is its founder? Song Jiaoren and Sun Yat-sen when? 1919 did they sponsor any organization? Yes,  Islamic organizations, The Muslim Chengda school and Yuehua publication and the Chinese Muslim Association. state one policy they have on ethnic minority groups? They consider all minorities to be members of the Chinese nation. where was the latter founder born? A village of Cuiheng, Xiangshan County (now Zhongshan City), Guangdong
wiki:8323686
Sun Yat-sen [SEP] Religious views and Christian baptism
C. R. Hager an American missionary of the Congregational Church of the United States (ABCFM) to his brother's disdain. The minister would also develop a friendship with Sun. Sun attended To Tsai Church (), founded by the London Missionary Society in 1888, while he studied Western Medicine in Hong Kong College of Medicine for Chinese. Sun pictured a revolution as similar to the salvation mission of the Christian church. His conversion to Christianity was related to his revolutionary ideals and push for advancement.