Zhao Rukuo (simplified Chinese: 赵汝适; traditional Chinese: 趙汝适; pinyin: Zhào Rǔkuò; 1170–1231), also romanised as Zhao Rugua, Chau Ju-kua, or misread as Zhao Rushi, was a Chinese government official and writer during the Song dynasty. He wrote a two-volume book titled Zhu Fan Zhi. The book deals with the world known to the Chinese in the twelfth and thirteenth centuries; the first volume is a list of foreign places with descriptions of each place and the customs of its local people. The second volume is a catalog of trade goods. Source: Wikipedia (en)