Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Daga baya, Jihohin Cao da Song sun zama masu adawa da juna. Duke Jing na Song ya kama Duke Dao na Cao a cikin 515 BC kuma ya ɗaure shi fursuna har zuwa mutuwarsa. Bayan haka, rikici ya barke a Cao kuma magajin Duke Dao Duke Sheng na Cao da Duke Yin na Cao an kashe su daya bayan daya. Duke Fei na Cao ya zama mai mulki kuma ya ci amanar Jihar Jin ta hanyar mamaye Jihar Song. A sakamakon haka, Duke Jing na Song ya kai wa Cao hari. Babu dakarun daga Jihar Jin da suka zo don ceto irin wannan Jihar Cao da aka hallaka a 487 BC bayan kama Duke Fei na Cao.  Tambaya: Waɗanne jihohi suka zama maƙiya da juna?
Jihohin Cao da Song