To be fair, Masu is by no means mediocre. Ma Su was born in Yicheng, Xiangyang (now southeast of Yicheng, Hubei), and is Ma Liang's younger brother. "Mars P5" is very famous in the local area. Ma Su this person "outstanding talent, good on military strategy" (see the reflection. Shushu. Biography of Ma Su), military theory is very good. Zhuge Liang once said: "The South China will not last long if it stays away from danger. Although it is broken today, it will be heard again tomorrow. Today, the public has turned the country to the Northern Expedition to strengthen anti-thieves. He knows that the official power is weak and the rebellion is fast. If we try our best to eliminate future troubles, it is neither kind nor hasty. The husband uses the way of fighting, attacking the heart as the top, attacking the city as the bottom, taking the heart as the top and taking the soldiers as the bottom. I am willing to serve his heart. " (see reflection. Shushu. Ma Su biography "pei note cited" xiangyang "). This set of propositions put forward by Masu should be said to have a profound understanding and long-term strategic vision of the South China Sea issue. Therefore, Ma Su was deeply appreciated by Zhuge Liang. When Zhuge Liang and Ma Su discuss military affairs together, they often have to "work from day to night".