Hanoi Streets Yen So Street Posted on May 8, 2014March 16, 2015 by admin 08 May Yen So street, Yen So ward, Hoang Mai district, Hanoi, Vietnam. It’s 500m long, from Tam Trinh road to Yen Duyen market. This new name was given in December, 2006. Yen So Street, Hanoi admin Yen Phuc Street Yen Thai Lane