Tokyo zoo mourns panda cub

China has expressed its regret over the death of a one-week-old panda at Tokyo zoo on Wednesday.

The cub was the first panda born at the zoo in 24 years. He died of pneumonia.

"We lament the loss of the cub and believe the Japanese people, who have been looking forward to seeing the cub will also lament this loss," Foreign Ministry spokesman Liu Weimin told a daily news conference.