Disabled son in China takes care of paralysed father

Despite his limited physical abilities, Zhang Xiaodong can take care of his father, who had a stroke several years ago. The 36-year-old was diagnosed with ankylosing spondylitis in 2008. Since then, he has only been able to move his arms and hands. He recently started sharing videos of their daily life on social media platforms to earn money for joint surgery which may help him walk again.