They can't have as many kids in China, the government has quotas. If they had other places to live, they could have more kids. So there ya go. Reason to imperialize.
They are not known for having large families in the UK, they have been here for over 200 years, the majority are fully integrated. The kids do not roam the streets in gangs unlike other immigrants that are in the UK, again I will say, I dont have a problem with the Chinese.
As for eating cats and dogs, they use the meat to eat and export the furs - it doesn't mean that they're doing it in the UK.