Ok, so according to:
Liu, Li. The Chinese Neolithic: Trajectories to Early States
The Peiligang culture (?????, Péiligang Wénhuà) is a name given by archaeologists to a group of Neolithic communities in the Yi-Luo river basin in Henan Province, China. The culture existed from 7000 BC to 5000 BC. Over 70 sites have been identified with the Peiligang culture. The culture is named after the site discovered in 1977 at Peiligang (in Xinzheng county). Archaeologists think that the Peiligang culture was egalitarian, with little political organization.
The culture practiced agriculture in the form of cultivating millet and animal husbandry in the form of raising pigs. The culture is also one of the oldest in ancient China to make pottery.
The site at Jiahu is one of the earliest sites associated with this culture.
and:
^ Reilly, Kevin (1997). The West and the World
The wall of Jericho, also referred to as Sultanian [citation needed] is a Pre-Pottery Neolithic A (PPNA) defensive wall dated to approximately 8000 BC.[1] It is thought to be the first city wall ever built. [ 1 ] It surrounded and protected a Neolithic settlement which contained anywhere from 2000 to 3000 people [ 2 ] . The wall was complemented by a stone tower built into it. The tower had stairways and is thought to have reached a height of ten meters. The wall is thought to have been built in order to prevent floods but the height of the wall (approximately 5 feet (1.5 m) thick and 12 to 17 feet (5.2 m) high) as well as that of the tower suggests a defensive purpose as wel