Underground space planning in Hà Nội vital for future expansion: Exper… stockbot 0 158 2021.11.06 18:33 http://vietnamnews.vn/society/1073300/underground-space-planning-in-ha… + 14 https://vietnamnews.vn/rss/society.rss + 2 As of July 2021, Hà Nội’s population reached over 8 million, increasing by almost 200,000 people per year on average.