He must be in the great Zhou

"It's possible. I asked uncle Peng about the time when fourth brother Peng got into an accident. Uncle Peng was in the capital at that time, so I asked him about the qu King. He said that the qu King's eldest grandson was born that year, but he was weak and sickly. The qu King personally went to the temple to pray for his eldest grandson for six months. "Moreover, the qu King's descendants are all weak and sickly. They've been soaked in medicine since they were young. He had a few sons, but only one survived in the end. He has quite a few grandsons, but none of them are as healthy as the others." Gu shouxin explained.