Yellow River (Lidai huanghe bianqian tukao歷代黃河變遷圖考), which covered topics such as mathematics, river conservancy, electricity, and principles of machinery. 13 Liu E understood that Western learning has its practical uses (xixue wei yong 西學為用). He intended to strengthen China's industry through the borrowing and application of Western technology. In 1893, Liu E joined the London-based Peking Syndicate (fu gongsi福公司) as supervisor. He planned to work with foreigners and develop China's industry through industrial projects such constructing railroads and opening coal mines. At first hopeful about the industrial prospects, Liu E discovered the company's draft treaty violated the rights and interests of Chinese workers. He traveled from Taiyuan to Beijing three times to request changes in the contract, but in the end, he was dismissed from the company. Liu E then left for Shanghai and raised funds with a friend to open a general merchandise store called the Five Story Shopping Mall (wu cenglou shangchang 五層樓商場), but Liu E was later forced to close the business. 14 After the Boxer Rebellion of 1900, Liu E traveled to Shanghai where he met with his friend Lian Mengqing 連夢青 (d. 1914). Lian Mengqing made a living by writing for Shanghai's Commercial Press in a magazine called Xiuxiang xiaoshuo 秀像小說 (Illustrated Magazine), edited by Li Boyuan, author of The Bureaucrats. 15 To assist his friend, Liu E submitted manuscripts to this magazine, which began serializing Travels in 1903. After Travels was 13 Collected in ZL, 118-26. This includes the San sheng Huanghe tushuo 三省黃河圖說 [Handbook for the Three Provinces and Yellow River]. According to the editors of ZL, this is part of Liu E's larger 1893 text.