I think you can just give him a message via youtube or hongye (red leaves) that there are people here as well.
I don't think it is necessary to regard the two forums as different fortresses. There are people interested in the same arts at both places. maybe it is good with two different boards. Some people might feel it's more fun over there, some people feel more comfortable over here.
. . . and some people always goes where they think they have the best set of smileys. And others think that smileys are
. . . anyway, I personally don't care what forum I visit as long there is interesting discussions and a friendly tone. Why should HJH feel different?