Puyi had a standard Confucian education, being taught the various Confucian classics and nothing else. He later wrote: "I learnt nothing of mathematics, let alone science, and for a long time I had no idea where Beijing was situated". When Puyi was 13, he met his parents and siblings, all of whom had to kowtow before him as he sat upon the Dragon Throne. By this time, he had forgotten what his mother looked like. Such was the awe in which the Emperor was held that his younger brother Pujie never heard his parents refer to Puyi as "your elder brother" but only as the Emperor. Pujie told Behr his image of Puyi prior to meeting him was that of "a venerable old man with a beard. I couldn't believe it when I saw this boy in yellow robes sitting solemnly on the throne".