It's bad to talk about people who are dead. But I read somewhere that the trouble between Barbara Yung, Miu Kiu Wai, and Kent Tong all began in the filming of "The Foundation" starring Felix, Barabara, Miu, and of course Kent...
Rumours had it that Barabra and Miu went on dates during the shooting of "Legend of the Condor Heroes", regardless of how friendly they might be, a man, any man, is going to get jealous never the less. Who wouldn't get jealous knowing that your girl is spending time with a handsome guy like Miu and what's worse, he's not gay!!
During the shooting of "The Foundation", it was noted that Kent Tong got increasingly jealous... and was said to have had a dummy spat at both Miu and Felix. That was shortly after a segment Miu and Felix did for K-100 to promote the show, which they decided not to include Kent... Apparently it was the to do with pushing weights and seeing who's the strongest out of Miu and Felix... Because Miu always flirted with Barabra on the set by flexing his muscles, so Kent wanted to beat Miu and embarress him in front of a TV audience. So Miu and Felix suggested that they not include Kent in that segment...
Anyway matters got worse when TVB decided to pair Miu with Barbara together in other shows after "The Foundation". Kent thus was said to have cheated on another girl (who was just a lowly supporting actress) to make Barbara jealous. But eventually Kent did fall for another woman. So Barabara wanted to do something to make Kent jealous and show the world how much Kent had hurrt her... Thus leading to her death... But it was said, that Barabara only did this as an 'act' and had never intended to die as a result... So it was sad... Thus Kent's acting career basically went down hill from there...