[00:03.29]Protected by the Great Wall in the north, [00:05.90]and fed by the Yellow and Yangtze rivers, [00:08.75]China's eastern heartland is the centre of a flourishing [00:11.99]civilisation which spans more than 5,000 years. [00:20.24]To outsiders this is a mysterious land. [00:34.00]It contains dazzling man-made structures. [00:45.00]And it's home to some of China's rarest and most charismatic creatures.