Development of the Lan Na Kingdom

Timeline

1. 1355–1357Chiang Mai · ThailandKing Kue Na succeeded to the throne in 1355, ending earlier succession disputes and consolidating Lan Na's control over the Chiang Mai basin and parts of the upper Mekong region, creating a stable environment for subsequent religious and cultural development.
2. 1356–1358Doi Suthep · ThailandKing Kue Na invited the Ceylonese high monk Phra Sumana to Lan Na, establishing monasteries at places like Doi Suthep, implementing orthodox Theravada discipline to replace earlier syncretic religious practices, and aligning Lan Na Buddhism with the Ceylonese tradition.
3. 1355–1360Lan Na–Sukhothai border · ThailandLan Na maintained a shifting state of war and peace with Sukhothai and the emerging kingdom of Ayutthaya, exchanging Buddhist scriptures, architectural styles, and Lan Na script writing traditions, forming both the divisions and connections between the Northern Thai and the Siamese cultural sphere of mainland Southeast Asia.