It can be said that with the Tai Chi Diagram, as long as one has the armed forces to defend a city, they can successfully hold all the cities within the range of the Tai Chi Diagram's space folding. No matter where the attack comes from, they can instantly rush to the spot, which is incredibly convenient. Without the Tai Chi Diagram, to occupy so many cities, one would probably need thirty or forty diamond-ranked experts at the very least.
After understanding the situation, Xin Yun issued an order to stop further expansion. The next step was to focus on stabilization, ensuring all cities were secure and greatly improving the living conditions of the citizens. This was of utmost importance.