The Lajia Site, located in Lajia Village, Guantang Town, Minhe Hui and Tu Autonomous County, Haidong City, Qinghai Province, was discovered to have been destroyed by an earthquake and flood 4,000 years ago. It is the only large-scale disaster site discovered in China to date. The site still contains remains of a mother protecting her child and turning back to rescue her relatives, thus earning it the nickname "Oriental Pompeii." The Lajia Site is a large prehistoric settlement site in the upper reaches of the Yellow River, primarily inhabited by the Qijia culture. Discovered in 1981, the site underwent nine years of archaeological excavation from 1999 to 2007, uncovering important remains of the Qijia culture, including settlement dwellings, high-level tombs, moats, small squares, and altars, yielding many groundbreaking new discoveries. From 2013 to 2019, the site underwent its second phase of fieldwork. More than 450 sites were discovered, including house foundations, moats, pottery kilns, sacrificial pits, tombs, large gullies, ash pits, and ash ditches. Over 2,000 artifacts related to production and daily life were unearthed, primarily from the Majiayao, Qijia, Xindian, and Han-Jin cultures. On June 25, 2001, the Lajia site was designated as a fifth batch of National Key Cultural Relics Protection Units by the State Council of the People's Republic of China.
Key Discoveries: 1) A large jade knife, 35 cm long, 15 cm wide, and 0.5 cm thick, has a round hole and is broken at the second hole. Since ancient times odd numbers were considered auspicious, it is inferred that this jade knife had at least three holes, meaning the shortest piece was at least 70 cm long; 2) The Yellow River Chime King, 91 cm long, 61 cm wide, and 4 cm thick, is rectangular with a carved perforation for hanging and a symbolic blade. It was made in imitation of a rectangular stone knife from the same period, unlike the traditional bow-shaped or L-shaped chimes. Based on the discoveries at the Lajia site, the shape of the stone chime should be related to production tools, originating from the stone knives of the Qijia culture; 3) In 2002, an inverted pottery bowl was discovered on the ground of house F20 in the eastern area of the Lajia site, containing noodle-like remains, the shape of which is basically the same as modern ramen. This is the earliest known physical evidence of noodles. Researchers took samples from the sediment, which is about 6 cm thick, every 1 cm, extracting samples from six locations: three from the location of the noodle-like objects and three from the soil layer beneath them. Through phytolith analysis, starch analysis, and biomarker compound analysis, it was determined that the noodles were mainly composed of millet, with a small amount of sorghum, which is consistent with the agricultural characteristics of the Qijia culture at the Lajia site inferred by archaeobotanists based on plant seeds.