The paper offers the evidences from Old Chinese and Tibetan to certify that they are cognates experienced phonetic changes of *Kw-/*K- > *P- occurring in Proto-Chinese period before at least 1100BC.

• 本文以汉藏语的例证说明,它们是前上古汉语时期的*Kw-/*K- > *P-音变留下来的同源词。