Macao Health Bureau Director Lei Chin Ion (C) signs receiving documents at the handover ceremony of the second batch of mainland-made COVID-19 vaccines in Macao, south China, Feb. 28, 2021. The second batch of mainland-made COVID-19 vaccines were delivered to the Macao Special Administrative Region on Sunday. The first batch of mainland-made vaccines were delivered to Macao on Feb. 6. Inoculation started on Feb. 9. [Photo/Xinhua]
