Uncle Percy, Aunt Yolanda and Sylvia (Si-lan), father Jack and friends, late 1920s in Moscow

from Footnote to History by Si-lan Chen Leyda ISBN 0-87127-134-6

L to R, Uncle Percy and father Jack, with Warlord Feng Yu-hsiang, after negotiating safe passage from China to Russia for Mikhail Borodin, August 1927.

The instruction from Generalissimo Chiang Kai-shik was to kill all those on the Borodin caravan. Uncle Percy convinced Feng to avoid retribution by Stalin, as Chiang would invariably deny having given any order to kill.