Photo taken on May 18, 2019 shows the warning bell in front of the Chung Ying Street Historical Museum in Yantian District of Shenzhen, south China's Guangdong Province. The Chung Ying Street (Chung Ying means China and Britain), linking Shenzhen of Guangdong Province and Hong Kong in south China, has once again set sail in the development of the Guangdong-Hong Kong-Macao Greater Bay Area and embarked on a new journey towards high-quality development. (Xinhua/Liu Jie)