A resident receives a dose of vaccine in a mobile COVID-19 vaccination vehicle near Xidan business area in downtown Beijing, capital of China, April 7, 2021. Since April 1, Beijing has started to use mobile COVID-19 vaccination vehicles in its four districts to expedite vaccination. The vehicles are equipped with facilities such as computers, refrigerators and air conditioners to ensure the convenience, safety and reliability during the vaccination process. Technologies such as 5G and big data are also employed to manage vaccination with digital means and ensure the traceability of the whole process. (Xinhua/Li Xin)