Frost forms on the Wutong Mountain in Luohu District, the highest mountain in Shenzhen, at around 7 a.m. yesterday, when the temperature was recorded at zero degrees Celsius. The city is experiencing a cold snap this week and the cold weather will last for two to three more days, with the lowest temperatures expected to range between 4 and 9 degrees Celsius from today until Saturday.    (Story on P3)Wutong Mountain Management Office’s WeChat account