'Compassion' overload poses ecosystem threat

People who release animals into the wild believe they are being kind, but their actions pose a potential danger to the natural world. Su Zhou reports.

Liu Lian believes that her years of adhering strictly to the concept of fangsheng - saving animals from being slaughtered for food and releasing them into the wild - has changed her son's destiny.

Liu, from Fuzhou, Fujian province, said her life was perfect until four years ago when she was nine weeks pregnant and was diagnosed with a serious heart condition.