They have also identified the fault in the earth's crust along which this motion took place. It is a belt of severely altered rocks more than 600 miles long, from Tibet to the Gulf of Tonkin. The Red River, which flows from China across Vietnam into the gulf, follows this zone.

The festival is celebrated on the eighth lunar month's full moon night, the most charming and picturesque night of the year, marking the end of the rice harvest in the Red River Delta around the Vietnamese capital originally.

Red river

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