Marquis Zhuang of Cai (è¡èÂÂ侯) (d. 612 BC), born Jë JiÃÂwà, was the fifteenth ruler of the State of Cai from 645 BC to 612 BC. He was the only known son of Lord Mu of Cai (è¡ç©Â侯), his predecessor. His reign was a period of 34 years. He was succeeded by his son.