Not exactly. I would see Luo and Su being brothers. They studied with Hong durring the same time. Brinkman was not studying under Hong when Su was there (so far as I know.)
I can see where they could be considered brothers, but not quite from the same generation if you know what I mean. Mr. Brinkman considers Luo to be his teacher so I don't know what that would make Su. An uncle possibly?
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Chris Haynes