Conversation so far:
What religion was Sun born with?
CANNOTANSWER.
Did the article say why he was interested in Christianity?
Schriffin writes that Christianity was to have a great influence on Sun's whole future political life.

Question: Is there any other data on his religious views?
Self-contained rewrite: Other than being interested in Christianity, is there any other data on Sun Yat-sen's religious views?