Gong Hwang-Cherng in two papers (1980, 1995) collected a number of cognate sets among Chinese, Tibetan, and Burmese. This paper reexamines these cognate sets (base on Gong 1995) using a six vowel version of Old Chinese, specifically the Baxter-Sagart system. In light of six vowel theory it is possible both to be more confident about some cognate sets and possible to reject or revise others.