The Qing Dynasty did not want to open China for trade with other countries because they considered foreigners to be barbarians. If other rulers wanted to trade in China, they had to make "tribute" missions where they would bring gifts to the emperor and be expected to kowtow (bow his three times) before the emperor. The Chinese only allowed one port, Guangzhou in Canton open for foreign trade.
Verified answer
The Qing Dynasty did not want to open China for trade with other countries because they considered foreigners to be barbarians. If other rulers wanted to trade in China, they had to make "tribute" missions where they would bring gifts to the emperor and be expected to kowtow (bow his three times) before the emperor. The Chinese only allowed one port, Guangzhou in Canton open for foreign trade.