first 劉備 say he is the 中山靖王 posterity but is not evidence to prove thes statement i got to say 劉備 is Very clever he Know 中山靖王 have many son so 劉備 think Maybe i can pretend is 中山靖王 posterity but in 晋 dynasty there is a man call 劉琨 字 越石 he also is 中山靖王posterity but 劉琨 is true 中山靖王 posterity unlike 劉備 劉琨 have a prove so 劉備 say he is 中山靖王 posterity but only himself to say These words perhaps when the 督邮 Say 劉備 is pretend 中山靖王 posterity 劉備 is Very angry to beat 督邮 because 督邮 is uncover he identity Tell the people he is liar in 三国 era intellectual no one believes he is 中山靖王 posterity except Those poor man