King Cheng of Zhou
King Wen's grandson King Cheng of Zhou ( 10421021 BC) awarded Yuxiong's great-grandson Xiong Yi the hereditary title of "zǐ" (, "viscount") and the fiefdom of Chu. As it grew in power and importance, the Xiong dynasty formed its ruling house and the ruling houses of some of its successor states. To this day, the surname remains prominent in the provinces comprising the former territory of Chu.