SHANGHAI --- China's financial hub Shanghai was set to record its chilliest period in December in four decades, spurring authorities to issue warnings for low temperatures and wind, while northern cities battled icy conditions forecast to ease only next week. The city's lowest temperatures on Thursday will be minus 4 to minus 6 degrees Celsius (21 to 24 degrees Fahrenheit) in Shanghai's suburbs, and temperatures will remain below zero all day throughout the city, the Shanghai Meteorological Bureau said in a post on its Weibo social media account. Wang Kaiyun, 59, who works as a cleaner in downtown Shanghai and commutes from the city's suburbs on an electric scooter, said the te...Keep on reading: China’s cold snap reaches Shanghai with chilliest year-end in 40 years