Original sentence: Qi had lived alone in his home and studio on the university campus since his wife Zhang Baochen died in 1975.What he also valued most in his life was the pure love and selfless support between him and his wife Zhang Baochen who died in 1975
Edited sentence: Qi had lived alone in his home and studio on the university campus since his wife Zhang Baochen passed away in 1975.What he also valued most in his life was the pure love and selfless support between him and his wife Zhang Baochen who passed away in 1975