小西,
Yes, I am absolutely sure that Mr. Liu had a newphew who also played 高胡. At that time, Mr. Liu's newphew was not playing 高胡 professionally, and I don't know if he ever became a professional musician. But he was a few years older than me and played better than me. That's why Mr. Liu asked me to learn from his newphew when I returned to Taishan.
ssh,
Sorry, Mr Liu did had a newphew, but he didn't play any more 高胡, that's why i almost forgot he play 高胡too.
Fresh back my Memories......yeah, i don't know which year he start lerning 高胡, and which year stop, let me ask him give you answer tomorrow.