Frontier town · Chieftaincies of the south and south-west, on the loose rein · as at first light, 1 January 1200

Chi Lang pass

A narrow limestone defile on the road from Lạng Sơn to the delta, called the Devil's Gate in the Tang records (board).

Every invasion from the north has to come down it and the country has learned to close it behind them. We did not check the Tang name.

Who holds it

Title
Ly officer or local chief
Confidence
low

The campaign board entry notes only

Lord in 1200

The Ly army's gate; no garrison known.

Walls and castle

A defile; no fortification known for 1200.

Places of note

  • Chi Lang pass: The place

Where the sources disagree

Evidence: The campaign board entry note and a modern coordinate; nothing in our sources dates the place to 1200.

"The campaign board" is OMNIA's working map. These notes record where its earlier claims were checked against the sources.

Primary sources for Chiefs of the south-west

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

Sources and studies

  1. OMNIA board notes for the Vietnam and Champa area (a lead, not a source)

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.