Over the past few decades, more than 200 million people in rural China have migrated to the cities in search of work.

And as we've reported here on BON, this mass migration has resulted in thousands of children being left behind in rural villages. They are known as China’s "left-behind children". Now one Chinese province has set up a system to house those children.

As the summer vacation is coming to its end, those migrant workers’ children who come to cities to spend the vacation with their parents, who are also known as migrant birds, are returning to their home town for school. As BON’s George Liu had found, the migrant birds’ vacation is quite different from those children from cities.

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Roseann Lake meets two veterinarians to discover China's progressive pet culture. With a new, unregulated industry, they consider pet food safety, adoption, disease prevention and legislation surrounding pet ownership.

Roseann Lake meets two veterinarians to discover China's progressive pet culture. With a new, unregulated industry, they consider pet food safety, adoption, disease prevention and legislation surrounding pet ownership.

It's a touching song, but you couldn't blame these children if they struggled to match the lyrics with their surroundings.

Pupils at Long Hai, one of an estimated 300 schools for migrant children nestled on the dusty outskirts of Beijing, they're more likely to see smog than blue sky. Building sites have replaced anything that resembled beauty and for most, the only friends they have are the ones in this classroom.

That's because these kids are treated largely as second class citizens in their country's capital. Most regular public schools in the city won't accept them – despite government pressure to do so. Few of them are entitled to health insurance and most face discrimination simply because they are from a different part of the country.