《吕氏春秋·览·审分览》
楚庄王围困宋国九个月，楚康王围困宋国五个月，楚声王围困宋国十个月。
庄王围宋九月，康王围宋五月，声王围宋十月。
King Chuang of Chu besieged the Song for nine months, King Kang of Chu besieged the Song for five months, King Sheng of Chu besieged the Song for ten months.