Indeed I don't believe anything coming out of China but then I don't see why they would lie about the things they are doing and then not do them. I honestly think they have it under control and the only lie they are telling is with the pain they've taken to get it done.
Here really we are playing at it, we are supposedly in the highest lockdown yet I can goto the shops, I can goto restaurants, I can even see my mates in a park so we are bound to do worse. In China they don't have this, if an outbreak is detected you are locked in your houses until the outbreak is over and that can only be proven through testing. This protects the virus from spreading from those areas and so the rest of the country is seeing total normality.
Even if you want to get on a train to go elsewhere in China you are tested, they know where you are going and so if you test positive they know where the next outbreak is. Here I can get on a train and travel 250 miles to Cornwall and no-one would have a clue but I could spread the virus there and off it goes, no-one would know until testing proved an outbreak which by then would be too late.
I'm not saying China have the right approach but it's the right approach if the only goal was to stamp out the virus and return to normality as soon as possible. The US is the best example of the opposite end of the spectrum, they have valued their economy and freedoms above dying people which is why more people have died and are still dying there than anywhere else.