Report (link) based on information on December 16 from Hà Nội Urban Railway Project Management Board. Report write 11.5km long Metro Line 2 has 8.9 km underground section and 7 underground stations. Project get Japan funding.

https://laodong.vn/xa-hoi/ha-noi-du-kien-thi-cong-tuyen-metro-so-2-tu-nam-2025-1436576.ldo