In Zhejiang and Anhui was where green tea was processed. His second expedition was, even more, exiting; black tea districts in the Wuyi Mountains in Fujian. This is where Fortune made a huge discovery. He discovered that black tea was derived from the same plant as green tea, but just processed and handled differently. Westerners had only recently been allowed to visit the various ports in China because of the Opium War. Fortune's discovered while in Fujian was that green tea had been colored by the Chinese for the export market using Prussian Blue and gypsum. Fortune had some trouble transporting the highest quality tea plant seedlings to Darjeeling in India, but eventually, he had done it successfully and also provided skilled tea makers and extensive notes on how to process the tea for full