Question: Who is the paternal grandfather of King Ping Of Chu?

Knowledge 1: King Ping of Chu
King Píng of Chu (died 516 BC).During the Spring and Autumn period of ancient China, he was king of the State of Chu from 528 BC to 516 BC.He was a son of King Gong of Chu and his consort (a sibling of King Zi'ao).Born Xiong Qiji , Píng changed his name to Xiong Ju  after ascending the throne, and King Píng was his posthumous title.The likely reason for his name change was his response to a naming taboo.He married Bo Ying and was succeeded by their son, King Zhao of Chu. [SEP] Knowledge 2: King Gong of Chu
King Gong of Chu (600–560 BC) was from 590 to 560 BC the king of Chu, a major power during the Spring and Autumn period of ancient China.He was born Xiong Shen , and at the age of 10 succeeded his father King Zhuang of Chu, who was the Hegemon of China.However, in 575 BC King Gong was defeated by Chu's archrival Jin in the Battle of Yanling and Chu's power declined.He ruled for 31 years and was succeeded by his eldest son, King Kang of Chu.Three of King Gong's younger sons also ascended the throne, all by treacherous means.
Knowledge 1: King Ping of Chu
King Píng of Chu (died 516 BC).During the Spring and Autumn period of ancient China, he was king of the State of Chu from 528 BC to 516 BC.He was a son of King Gong of Chu and his consort (a sibling of King Zi'ao).Born Xiong Qiji , Píng changed his name to Xiong Ju  after ascending the throne, and King Píng was his posthumous title.The likely reason for his name change was his response to a naming taboo.He married Bo Ying and was succeeded by their son, King Zhao of Chu. [SEP] Knowledge 2: King Ping of Zhou
King Ping of Zhou( died 720 BC), formerly romanized as King P’ing of Chou, was the thirteenth king of the Chinese Zhou dynasty and the first of the Eastern Zhou dynasty.He was the son of King You of Zhou and Queen Shen, and was known as Crown Prince Yijiu before ascending the throne.KingYou had exiled Queen Shen and Yijiu after the king became enamoured with his concubine Bao Si and made her queen.As a result, Queen Shen ’s father, the Marquess of Shen, teamed with the Quanrong nomads and local satellite states to overthrow King You.You was killed, and Bao Si captured.Yijiu ascended the throne and was posthumously known as" King Ping of Zhou".At about the same time, Jī Hàn( 姬翰), Duke of Guó( 虢), elevated Jī Yúchén( 姬余臣) to the throne as King Xie of Zhou, and the Zhou Dynasty saw a period of two parallel kings until King Xie of Zhou was killed by Marquis Wen of Jin in 750 BCE.KingPing moved the Zhou dynasty east from Haojing to Luoyang, thus ending the Western Zhou and beginning the Eastern Zhou dynasty and the Spring and Autumn period.He is the first Zhou king to be mentioned in the chronological account of the Zuo Zhuan.Over 14 centuries after King Ping ’s death, Tang dynasty Empress regnant Wu Zetian claimed ancestry from King Ping through his son Prince Wu, and changed the dynastic name to Zhou, which was reverted to Tang after her death.
Knowledge 1: King Gong of Chu
King Gong of Chu (600–560 BC) was from 590 to 560 BC the king of Chu, a major power during the Spring and Autumn period of ancient China.He was born Xiong Shen , and at the age of 10 succeeded his father King Zhuang of Chu, who was the Hegemon of China.However, in 575 BC King Gong was defeated by Chu's archrival Jin in the Battle of Yanling and Chu's power declined.He ruled for 31 years and was succeeded by his eldest son, King Kang of Chu.Three of King Gong's younger sons also ascended the throne, all by treacherous means. [SEP] Knowledge 2: King Ping of Zhou
King Ping of Zhou( died 720 BC), formerly romanized as King P’ing of Chou, was the thirteenth king of the Chinese Zhou dynasty and the first of the Eastern Zhou dynasty.He was the son of King You of Zhou and Queen Shen, and was known as Crown Prince Yijiu before ascending the throne.KingYou had exiled Queen Shen and Yijiu after the king became enamoured with his concubine Bao Si and made her queen.As a result, Queen Shen ’s father, the Marquess of Shen, teamed with the Quanrong nomads and local satellite states to overthrow King You.You was killed, and Bao Si captured.Yijiu ascended the throne and was posthumously known as" King Ping of Zhou".At about the same time, Jī Hàn( 姬翰), Duke of Guó( 虢), elevated Jī Yúchén( 姬余臣) to the throne as King Xie of Zhou, and the Zhou Dynasty saw a period of two parallel kings until King Xie of Zhou was killed by Marquis Wen of Jin in 750 BCE.KingPing moved the Zhou dynasty east from Haojing to Luoyang, thus ending the Western Zhou and beginning the Eastern Zhou dynasty and the Spring and Autumn period.He is the first Zhou king to be mentioned in the chronological account of the Zuo Zhuan.Over 14 centuries after King Ping ’s death, Tang dynasty Empress regnant Wu Zetian claimed ancestry from King Ping through his son Prince Wu, and changed the dynastic name to Zhou, which was reverted to Tang after her death.

Answer: King Zhuang of Chu