Ever wondered where your New Year's fireworks come from? Chances are they were made in Liuyang, a small city in central China that produces 60% of the world's fireworks. With a 1,400-year-old tradition enhanced by modern technology, Liuyang is redefining the art of pyrotechnics. Today, join CGTN reporter Xu Yi as she delves into this vibrant industry, meets the 'sky painters', and explores a city where the night sky becomes their canvas.