In this period, Puyi frequently visited the provinces of Manchukuo to open factories and mines, took part in the birthday celebrations for the Showa Emperor at Kwantung Army headquarters and, on the Japanese holiday of Memorial Day, formally paid his respects with Japanese rituals to the souls of the Japanese soldiers killed fighting the "bandits" (as the Japanese called all the guerrillas fighting against their rule of Manchuria). Following the example in Japan, schoolchildren in Manchukuo at the beginning of every school day kowtowed first in the direction of Tokyo and then to a portrait of Puyi in the classroom. Puyi found this "intoxicating". He visited a coal mine and in his rudimentary Japanese thanked the Japanese foreman for his good work, who burst into tears as he thanked the emperor; Puyi later wrote that ""The treatment I received really went to my head"."