 Neolithic peoples in Taiwan and mainland China continued to maintain regular contact with each other until 1500 BCE, which was when bronze artefacts started to appear.Jiao (2013) notes the Neolithic appeared on the coast of Fujian around 6,000 BP During the Neolithic, the coast of Fujian had a low population density, with the population depending on mostly on fishing and hunting, alongside with limited agriculture.According to the mainstream "out-of-Taiwan model", a large-scale Austronesian expansion began around 3000–1500 BCE.