Complex sentence: Xu Zhaopei was the granddaughter of the Southern Qi prime minister Xu Xiaosi (徐孝嗣), and her father Xu Gun (徐緄) was also an important official under Emperor Wu.
Split into simpler sentences: Xu Zhaopei was the granddaughter of the Southern Qi prime minister Xu Xiaosi (徐孝嗣). Her father, Xu Gun (徐緄), was also an important official under Emperor Wu.