Chai Rong
Guo Rong, posthumously known as Emperor Shizong of Later Zhou, was the adoptive son of Guo Wei. Born Chai Rong, he was the son of his wife's elder brother. He ascended the throne on the death of his adoptive father in 954. His reign was also effective and was able to make some inroads in the south with victories against the Southern Tang in 956. However, efforts in the north to dislodge the Northern Han, while initially promising, were ineffective. He died an untimely death in 959 from an illness while on campaign.