Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. The group conducts all-day operation to guarantee adequate medical supply at the frontlines. [Photo/Xinhua]

Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. The group conducts all-day operation to guarantee adequate medical supply at the frontlines. [Photo/Xinhua]

Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. [Photo/Xinhua]

Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. [Photo/Xinhua]

Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. [Photo/Xinhua]

Staff members work at a workshop of Northeast Pharm, a pharmaceutical group, in Shenyang, Northeast China's Liaoning province, Feb 8, 2020. [Photo/Xinhua]