The heroic and powerful Hongyi Jun of the Tang Dynasty, who protected the country and stabilized the country, went on a diplomatic mission to the Western Regions, and Lingxue Pavilion was ordered to protect him along the way.
For details of the pseudo follow-up story, please see "The Envoy to the Fortress: Li Yidong Qi (Baa Poison)"
Purpose: Protect the country and stabilize the country