I hear them here as well and some others too. Usually around 7290 or so. I don't like it anymore then anyone else BUT I also don't understand why we as hams insit on using freqs we know full well are being used by them. Normal to hear on that freq, (We better finish up because Radio China will be coming on in a few minutes and we wont be able to continue). Meanwhile there is absolutely nothing happening from 7100 to 7285. And I do mean nothing. Defies logic to this old ham. Not likely we can influence the big broadcasters to change but we do have lots of spectrum empty. Why not use it? Must be something about it i don't understand. Normally when driving I go around traffic jams rather then sit and cuss. Why not with radio?
The last time I tuned across 40m, it seemed that the Chinese stns started around 7240 or so. Sounded like 4 or 5 of them between 7240 and 7290. Of course, there's the various nighttime nets between 7178 and 7200, but that still leaves 7205 to 7235 (approx) open. And then there's the fact that Extras can use 7125 to 7175 (I'm a General). SSB subband for US hams starts at 7125. So, maybe when I repair my antenna I'll call CQ one night around 7230 or so (keeping in mind the Mexicans on 7225) and see what happens.