Description: The Yangtze River is Asia’s longest waterway, and arguably the most important river in the world. It stretches across the vast expanse of China, bringing life, wealth and energy to much of the country. It is an unrivalled icon, but its future is far from secure. It faces many issues from overfishing and flooding to pollution and the impact of climate change. The South China Morning Post examines the impact and legacy of one of China's most important resources.