busy at work, can't write long post.
i believe chen hong is in a limbo. Offfically he is off the national team but yet can't represent another country (ex. 2 yr minimum for Taiwan). So when he enter tournaments, he still has to represent china. However, china national squad own the rights to represent china, therefore, when chen hong play, the china national team (ie LYB) has the power to yank chen hong privilage to play for 'china' anytime 'LYB' feels like it. Technically, LYB doesnt need to tell CH not to play. LYB only need to tell the china open organizer that, chen hong isnt on china team so chen hong has to forfeit whenever LYB bring up this technicality breach in any BWF sanctioned tournaments.
This isn't a match fixing scenario, technically. LYB broke no rules or law but rather chen hong is or was playing on borrowed nationality. Chen Hong didnt forsee these consequences when quitting the team. He is a man in limbo. Chen hong can't have it both way like tony G. Tony is wanted by INA and US, it's different. Chen hong played other tournaments before because LYB didn't play his trump card. LYB has a CH voodoo doll. He can poke it anytime he feels like it
that's my take on this situation