Humidity makes Shanghai’s heat more unbearable lukyeee1976/Getty Images
“My office felt like a steamer on Monday morning,” wrote Chinese influencer Bi Dao in a social media post in August. He fetched a drink from a supposed cold-water dispenser – it was 40.8°C (105°F). Bi, who lives in Hangzhou, a regional capital on China’s east coast, decided to roam the city with a temperature gun, pointing it at things to find out exactly how hot they had got. “The ground was 72.6°C, the seat of a sharing bike was 56.5°C, the handrail in the metro station was 45°C, even the tree bark was 38.7°C,” he wrote. He ended his post by thanking…