Feng Ang, the minister of Sui Dynasty, occupied Lingnan area, with high mountains and long roads, self-respect and great influence, which was difficult to pacify. Feng Ang is resourceful and brave. He used to be General Zuo Wuwei of the Sui Dynasty. After the collapse of the Sui Dynasty, it occupied Lingnan, with tens of thousands of troops. The mountain was high and the emperor was far away, so it was difficult to conquer him. However, Feng Ang had no intention of confronting the Tang Dynasty and surrendered to Tang Yuan.

First, the family is strong and has outstanding life experience. Feng Ang's ancestor Hongfeng was the last emperor of Beiyan. Later, Rong Feng, Feng Ang's great-grandfather, made a secretariat of Luozhou, which is now the Guangzhou area. Since then, four generations of the Feng family have been active in Lingnan area, making friends with local people, and the family power has gradually become stronger. During the Sui Dynasty, it was very influential in Lingnan.

Second, the position is constantly improving and the personal strength is growing. Feng Ang started from Song Kang county magistrate, and went to Gaozhou to make a secretariat to pacify Lingnan rebellion, which won Yang Di's favor. He followed Yang Guang to Liaodong and was promoted to General Zuo Wuwei. After Feng Ang returned to Lingnan, he strengthened his own strength and soon had tens of thousands of troops, becoming a huge local armed force in Lingnan area. When Li Yuan established the Tang Dynasty, Feng Ang surrendered to the Tang Dynasty and gradually took control of the Lingnan area, reaching the peak of power.

Third, fight bravely and die well. After Li Shimin acceded to the throne, he was dissatisfied with Feng Ang and wanted to get rid of this hidden danger. However, Minister Wei Zhi advised Li Shimin not to act rashly, but to see the situation clearly. After careful consideration, Li Shimin found it really difficult to pacify Feng Ang, so he took soft measures to woo Feng Ang. Feng ang is also very wise. He sent his son to Chang 'an to pay tribute to Li Shimin and solve a crisis. Later, Feng Ang took the initiative to go to Chang 'an, and was rewarded and given preferential treatment by Li Shimin. Therefore, Feng Ang is resourceful and has no political ambitions. He likes being content with the status quo. Whoever has great power depends on him, and he will do things well and will not easily offend others. Feng Ang lived about 75 years old and died in Zhenguan for 20 years. His son was also sealed by the court.