Liangzhu culture
The ancestral pre-Austronesian Liangzhu culture (3400–2250 BCE) of the Yangtze River delta was one of the ancient centres of Neolithic jade carving. Jade was spread to Taiwan by around 3,000 BCE, then further into Vietnam at 2,000 BCE and the Philippines at 1,800–1,500 BCE. All of them began to produce various tools and ornaments in indigenous jade workshops, including adzes, bracelets, beads, and rings.