The attack on Xing'an Prefecture and the tunnel excavation in Beicang Prefecture are both part of the Rong people's plan to occupy the Northwest of Great Chu, and the entire plan is interconnected. The suggestion for the Rong people to bypass the defense line and infiltrate the villages of Xing'an Prefecture was also proposed by Tuogude.
Tuogude poured his heart and soul into this plan, determined to seize the Northwest in one battle.
Therefore, after the plot in Beicang Prefecture failed and he fled, Tuogude pondered for a few days before sending a message to the General of Da Rong, advising an early attack on Xing'an Prefecture. This was to prevent news of the tunnel excavation spreading and Great Chu becoming cautious, which would hinder them from taking the city by surprise.
