The truck carrying the second batch of mainland-made COVID-19 vaccines arrives at the Zhuhai-Macao Cross-Border Industrial Zone, 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. (Xinhua/Cheong Kam Ka)