Feng Meng was described to be intelligent but wicked, and he gained the favor of Li Siyuan's powerful chief of staff An Chonghui, and was eventually promoted to be the deputy defender of Yedu (鄴都, in modern Handan, Hebei).
[5]) Regardless, after Shi Jingtang subsequently (with aid from Later Tang's northern neighbor Khitan Empire's Emperor Taizong) destroyed Later Tang and took over its territory as the emperor of a new state of Later Jin, Shi Chongyin was posthumously created the Prince of Shan, and Lady Feng received the title of Lady of Wu.
Further, her older brother Feng Yu was elevated to be an imperial scholar at Duanming Hall (端明殿) and the deputy minister of census (戶部侍郎, Hubu Shilang) and became an important advisor to Shi.
In late 946, Liao's Emperor Taizong, after defeating and forcing the surrender of an army under the command of Shi Chonggui's uncle by marriage Du Wei, approached the Later Jin capital Kaifeng.
Shi, finding the situation hopeless, surrendered to the Liao (and former Later Jin) general Zhang Yanze, whom Emperor Taizong had sent as an advance commander into Kaifeng first.