The BBC aside, state-run media's usually not all that great a source. It often tends to be a little heavy-handed towards glorifying the state and the party that runs it. CCTV of China is no exception.
And you will see examples of that in the piece provided today, but if you can get past that, here's ten minutes on how weightlifters get those big heavy things over their heads. It is, after all, an Olympic sport, with plenty of medals up for grabs, and China knows a thing or two about those.