C795 Yamen Pass?

Swallow Gate's grand opening?

The Yanmen Pass was a grand pass, the most important pass between the Central Plains and the Liaodong. It was a place that could not be opened even if one wanted to.

Song Naifeng was a famous general. When he found out Lu Zheng's objective, he had already made many guesses at the situation of the battle. According to his deductions, no matter what Lu Zheng did