Photo taken on May 15, 2019 shows a boundary monument of the Chung Ying Street. 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/Mao Siqian)