Experts warn of extreme, unusual heatwaves this summer stockbot 0 167 2023.05.09 10:02 https://vietnamnews.vn/society/1533529/experts-warn-of-extreme-unusual… + 0 https://vietnamnews.vn/rss/society.rss + 0 People in major cities such as Hà Nội and HCM City are advised to refrain from going outside at noon to protect themselves from the extreme heat.