Vũ Nin

Vũ Ninh is an old name for part of the northern Red River plain, in the country later known as Kinh Bắc. The Cầu River borders the area to the north, linking it with the waterways east of Thăng Long. A district bearing the name existed in the Lý period; villages and cultivated fields spread across the low ground between the river and the hills of the northern frontier.

The later city of Bắc Ninh lies here.