Nanning-Hanoi-Haiphong Economic Corridor enjoys such a significant geographical position and convenient communications thatthe construction ofthe Corridor shall be the propellingfactorto the economic developmentofChina and Vietnam and the establishment of Sino-ASEAN free trade area.Lang Son Province of Vietnam,which is the important port province that connects Vietnamwith China as well as an importantpassagewayto ASEANcountries,will play an importantrole in the region.