The novel coronavirus that causes Covid-19 is steadily spreading around the world. While countries such as South Korea, Italy and Iran report hundreds of new infections every day, the rate of new infections in China has dropped dramatically from what it was about one month ago. How did China turn the tide at the epicentre of the pandemic, and what lessons can other countries learn from the nation’s efforts to contain the disease? (Photo: Xinhua/Shen Bohan)