Making his way by train as far as Sian where he visited 8th Route Army headquarters, and from there to Lanchow by bus and truck, he hunted down clues, bribed employees of the Russian guest house for figures on arrivals, questioned sentries, police, bus drivers, innkeepers, servants, the Governor of Kansu and his secretaries, missionaries at Sian, a Tibetan interpreter, an automobile dealer, Chinese officers, student aviators and local Mongols. These
