The city of Gyou is located close to the royal capital and serves as its protector. In recent years, under Ri Boku's order, large scale renovations were made to fortify the city. It is heavily fortified with new huge watchtowers, that even the most foolish of generals could see that it is no simple city to capture. General Ou Sen considers it as the perfect city that will not fall from an attack.
Qin sees this city as a strategic advantage if Ei Sei's plan of unifying Middle Kingdom. Refugees from 9 Zhao cities converge upon this city due to Ou Sen's psychological warfare while the Zhao armies are busy fighting Yo Tan Wa and her forces, much to the horror of Ri Boku.