The Hong Kong–Mainland conflict or Hong Kong–China conflict (Chinese: 中港矛盾) refers to tensions between people from Hong Kong and mainland China, which have developed since the handover of Hong Kong's sovereignty to China in 1997, and in particular since the late 2000s and early 2010s. Various factors have contributed to the development of such tensions: these include a difference between the popular interpretation in Hong Kong of the "One country, two systems" constitutional principle as against the Chinese government's official interpretation; policies of the Hong Kong and central governments to encourage mainland visitors to Hong Kong; and changing economic environments in Hong Kong and mainland China. Increasingly, these tensions have resulted in a rising sentiment in Hong Kong of hosti