Extracted from http://en.wikipedia.org/wiki/Wu_Qi
"He and Sun Tzu are often listed in the same sentence (Sun-Wu,孙吴) as great military strategists."
My question is why are both of them listed in the same sentence? Is it purely coincidence or these surnames have a special affinity to each other?
For example, During the 3 kingdoms period, the eastern state of wu was also called Sun-Wu,孙吴.