 The opium traffic was later legalised in the Treaties of Tianjin, which China concluded after the Second Opium War resulted in another defeat for the Qing dynasty.The Nanking Treaty ended the old Canton System and created a new disadvantageous framework for China's foreign relations and overseas trade, which would last for almost a hundred years.From the Chinese perspective, the most injurious terms were the fixed trade tariff, extraterritoriality, and the most favoured nation provisions.