Puzzle: Is Ho Chi Minh City in the Southwest or Southeast region?

Name GIANG, not a river,
This is the name of five provinces, who can answer quickly?
Answer: Kiên Giang, Tiền Giang, An Giang, Hà Giang, Bắc Giang

Which river with nine branches flows into Thái Bình?
Answer: Mekong River

Which river flows in the sky,
A thousand stars gather to illuminate the long night?
Answer: Milky Way