"Sky Burial" by Xinran. Non fiction. Amazing true story. You will not regret reading it.
Two other books "The Star of the Sea" by Joseph O'Connor. This is so historically accurate and was an International best seller and acclaimed in reviews by all the most widely respected reviewers.
Second "The Book Thief" by Martin Zusak. Like you, I only read non fiction as a rule, but the last two are such amazing books and with such factual historical
detail that it was unputdownable. A masterpiece according to my brother!