 The most recent excavations reveal that humans had occupied the location sporadically for at least the last 60,000 years.The Neolithic cultural sequence here begins with the Dadiwan culture (c. 7900–7200 BP), followed by the Yangshao culture (c. 6800–4900 BP) and then the Changshan culture (c. 4900–4800 BP).The agricultural economy intensified and flourished during the early phases of the Yangshao culture.