Lang Son is a mountainous province, located in the Northeast of Vietnam;
154 km from Hanoi capital by road and 165 km by rail.
The North borders Cao Bang province, the Northeast borders China, the
Southeast borders Quang Ninh province, the South borders Bac Giang province,
the Southwest borders Thai Nguyen province, the West borders Bac Kan province.
North - South direction from 22.27 - 21.19 degrees north latitude; East - West
direction 106.06 - 107.21 degrees east longitude.
The following are some general characteristics of Lang Son:
