The First Coffee House on the Chinese Mainland around 1836, a Danish man, Peter Ostrovsky opened the first coffee house "North Wind and the Sea" near the Thirteen Factories(Shisan Hang) trading district in Guangzhou.
Guangzhou was China's only trading port with the West at the time.
In 1757, Emperor Qianlong closed the foreign trade functions of other coastal ports, leaving only the Yuehai Pass in Guangdong as a trading port with the West.
In other words, Guangzhou was the only legitimate foreign trade base open to the West by the Qing dynasty.