Panda fans have been flocking to a zoo in Japan to say goodbye to its star attractions - two giant pandas. They're being sent back to China at a time of increasingly strained relations between the two nations. The imminent departure of four-year-old twins Xiao Xiao and Lei Lei from Tokyo will leave Japan panda-less for the first time since 1972, prompting thousands to apply for lottery-assigned tickets to say farewell. Japan's prime minister said recently that there could be a military response if China invaded Taiwan. #GiantPandas #Japan #China #C4News #Channel4News