Why were European powers dissatisfied with cinas opening of the port of Guangzhou?

European powers were dissatisfied with China's opening of the port of Guangzhou because it limited their access to trade and restricted their interactions to a single port, creating a trade imbalance. The Chinese imposed strict regulations and tariffs on foreign merchants, which frustrated European traders seeking more favorable terms. Additionally, the Europeans sought to expand their influence and access to more markets within China, but the restrictions at Guangzhou hindered their economic ambitions. This dissatisfaction ultimately contributed to tensions that led to conflicts, such as the Opium Wars.