The city of Wuhan in central China is building a new 1,000-bed hospital to treat patients infected by the new coronavirus. Construction has begun in the city's western suburb. At one of the busiest construction sites in the world, hundreds of machines dig earth at the same time. Their common goal is to build a new hospital to combat the coronavirus. Chief Engineer Wu Zhizhen never leaves the site or his phone. To speed up the construction work, he stays alert.