Most countries have versions of this, not unique to China. Many parents are willing to use their kids to achieve what they could not and be successful even in horrible ways.
In the US you have child stars, beauty competition, sport sponsorships, talent scouts and alot more horrible ones I won't mention, ways that parents push their kids into fucked up industries, drugs, surgeries etc.
Not to defend this, but to say I wouldn't blame China but instead the international culture of everybody that watches a video of children online or tv. Stop it, it is never for the enjoyment of the child, always the fucked up adults around them.
I always cringe when someone shows me a video of someone who has an amazing singing talent and it's some 7 year old...