An employee holds a sheet of newly-launched special stamps honoring the COVID-19 frontliners at the Philippine Postal Corporation in Manila, the Philippines on July 14, 2020. (Xinhua/Rouelle Umali)

An employee holds a sheet of newly-launched special stamps honoring the COVID-19 frontliners at the Philippine Postal Corporation in Manila, the Philippines on July 14, 2020. (Xinhua/Rouelle Umali)

An employee holds a sheet of newly-launched special stamps honoring the COVID-19 frontliners at the Philippine Postal Corporation in Manila, the Philippines on July 14, 2020. (Xinhua/Rouelle Umali)

An employee shows newly-launched special stamps honoring the COVID-19 frontliners at the Philippine Postal Corporation in Manila, the Philippines on July 14, 2020. (Xinhua/Rouelle Umali)