Built on the Minjiang River flowing through the Chengdu Plain in southwest China's Sichuan Province, Dujiangyan is one of the oldest irrigation systems in the world. With a history of over 2,000 years, its continuous function has turned it into a living relic. CGTN reporter Yang Xinmeng and British vlogger Lee Barrett will visit the irrigation system, and its design and architectural miracle to explore the wisdom of ancient flood management on Friday.