Why the lonely in China are hiring 'temporary children'

In China's cities, despite the huge crowds, or maybe because of them, residents can feel very isolated.Now, a new industry being dubbed the "loneliness economy" has emerged, with people hiring themselves out as companions to help the elderly.The BBC's China correspondent Stephen McDonell visits a company that does just that, to see how their business works.Read more about the paid companions bringing warmth to China's lonely.