According to press reports, When Heaven Burns was the first TVB series in 20 years to be banned in Mainland China. So before this, which other ones had been banned?
Was he trying to say, that this series was banned and it was the first time in 20 years that a TVB series was banned in China? That article was posted months ago, it's basically the content of the series which caused it to be banned. China have strict regulations on what is allowed on TV/Movies etc.
