Chengziya, also spelled Chengziyai, is a Chinese archaeological site and the location of the first discovery of the neolithic Longshan culture in 1928.

It is protected and made accessible by the Chengziya Ruins Museum (Chinese: 城子崖遗址博物馆; pinyin: Chéngzǐyá Yízhǐ Bówùguǎn).

The site is located immediately to the north of provincial road S102 and less than 1 kilometre (0.62 mi) to the south of the Dragon Lake.

[1] The Chengziya settlement had rectangular layout (400 by 500 meters, 1300 by 1600 feet[1]) with edges oriented along the north-south and east-west directions.

[2] As there are no major walls inside the settlement, the layout conforms to the style of a "platform city" (Chinese: 台城; pinyin: tái chéng).

Larger sites up to 50,000 square meters are believed to be yi (central towns) and finally Chengziya itself has been identified as a du (Chinese: 都; pinyin: dū, capital).

[2] Based on thick deposits found at the site (from 3–4 up to 5–6 meters deep), the population of the Chengziya has been estimated to be in the tens of thousands.

[3] Additional excavations were carried out in 1990 by the Archaeological Institute of Shandong Province on the southern side of the provincial road.

[4] According to the survey and excavation, most of the city walls were dug with foundation grooves, and some parts were rammed on the ditch and silt, and repaired many times.

It shows that the city wall is divided into morning and evening, reflecting the development process of ramming technology during the Longshan culture period.

Several wells were found in the excavation area of more than 1,000 square meters, with high repairing and chiseling techniques and extremely regular shapes.

The remains of the Longshan Culture at Chengziya are cultivated by the government as a source of national pride in the long history of Chinese civilization.