Cao CaoSima ZhaoGuan YuGuan XingZhang BaoSima YiSun CeSun ShangxiangLiu ShanCao PiZhang Fei(Zhang) XingcaiXiahou BaSun Jian
A nickname for Sun Jian is "Jian Papa" or "Daddy Jian". Hence, why he is the center piece.Sun QuanGuan SuoSima ShiXiahou YuanGuan YinpingGuan PingLiu Bei