Kunming (China)-Hanoi (Vietnam) Expressway

China-Vietnam Expressway, which is the longest in Vietnam, stretches from Hanoi’s Noi Bai through the provinces of Vinh Phuc, Phu Tho, and Yen Bai finally ending in Lao Cai. Now that the road is open to traffic, the travel time between Hanoi and Lao Cai has been cut in half.

The construction on the expressway began in 2009 and required a total investment of US$1.46 billion, including a US$1 billion loan from the Asian Development Bank (ADB) – the project was one of the ADB’s key projects in the Greater Mekong Sub-region (GMS) program.
https://www.vietnam-briefing.com/news/longest-expressway-vietnam-opens-hanoi-lao-cai.html/