After the Javanese raid Zhang Boyi raised the La Thành wall around the protectorate's seat; Zhao Chang added to it in 791 and Zhang Zhou repaired it in 808, before Gao Pian rebuilt it as Đại La.
Construction
Zhang Boyi builds the La Thành wall
- 767 CE
- Southeast Asia
Meanwhile, elsewhere
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- 755 – 763 CEAn Lushan RebellionEast Asia
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- 8th century – 9th century CECarolingian Renaissance