A great book. Shortly after the first opium war, Robert Fortune got a contract from the Horticultural Society to go to China, make agricultural and horticultural observations, and bring back some plants that may be a commercial success. He spent three years collecting and wandering through Guangdong, Fujian, Zhejiang, and Jiangsu--not "northern provinces" by any means. This book is his report. It is eminently readable, with plenty of adventure, a hurricane, pirates, a near lynching in Guangzhou ganglands, visits to mandarins and their gardens etc. After his return to England, he got the EIC contract to bring tea plants and tea growers from Fujian to India. The second trip, with observations on the tea industry, is recorded in a different book of his, equally great.
Was he a thief? He certainly did not think so, and he got pretty much full cooperation from the Chinese he met. My view, he was an accomplished man at a time when two imperialist superpowers met and one of them did not survive the encounter.