When Roderick MacFarquhar passed away on February 10, 2019, I was left with a deep regret: that our friendship had been too short.“He can be very intimidating. Don’t be put off by it; it’s just a mannerism,” Nancy Hearst, the librarian at Harvard’s Fairbank Center, warned me before taking me to meet him for the first time.I had under my arm the manuscript of the memoir of Zhao