Question: Who is the father-in-law of Fragrant Concubine?
Sentence (from "Qianlong Emperor"): Despite his retirement, however, he retained ultimate power as the Retired Emperor until his death in 1799; he thus was one of the longest-reigning "de facto" rulers in the history of the world, and dying at the age of 87, one of the longest-lived.
Relevant evidence: No