What is the historical age when Yu Cong was born?

There is a Liujiawa Eastern Zhou site in Chengcheng County, Weinan City, Shaanxi Province. This is the site of the capital of Guo Rui in the late Eastern Zhou Dynasty 2,700 years ago. Guo Rui, an ancient country full of mystery, is rarely recorded in history books. Surprisingly, a more mysterious jade cong of Qijia culture was unearthed in this site. An ancient tomb was found in the northwest of Liujiawa Village, Wangzhuang Town, Chengcheng County, Weinan City, Shaanxi Province. It is more than 20 kilometers away from the county seat in the south and about 10 kilometers away from Huanglong Mountain in the north. Lujiahe, a secondary tributary of Luohe River, runs through the middle of the site from north to south. Earlier years, when people conducted the second national cultural relics survey, bronze kudzu and pottery pots from the Spring and Autumn Period were found here. However, it did not attract the attention of the archaeological community at that time. At the end of 20 16, the tombs of this site were stolen. According to the data, the scale of this grave robbery should be very large. At that time, more than 400 pieces (groups) of cultural relics were recovered, including bronze weights such as tripod, reed and pot. These restored cultural relics also reveal a very important message. The level of tombs here will not be low. It is inferred that it may be a tomb of Hou level. Under such circumstances, the rescue excavation of tombs is imminent. From 20 17 to 20 18, with the approval of National Cultural Heritage Administration, Shaanxi Institute of Archaeology and relevant cultural and cultural institutions in Weinan City and Chengcheng County formed a joint archaeological team and started the rescue excavation of Liujiawa Site. This excavation focuses on two cemeteries, including two Han tombs, and a large number of precious cultural relics and inscriptions have been unearthed. Archaeology magazine comprehensively reported the excavation report of this site. "The bronzes unearthed in the cemetery have inscriptions such as" Rui "and" Rui Taizi Bai ". At present, all the inscriptions are related to' Rui', and no written materials from other countries have been found. Judging from this, Liujiawa site should be the Guo Rui metropolitan site in the early and middle Spring and Autumn Period. According to the scale of the tomb, it is inferred that the owner of the tomb should be a monarch of Guo Rui in the early and middle Spring and Autumn Period. M 1 was seriously stolen. Although no bronze inscriptions were found, according to the scale of the tomb, the unearthed funerary objects and a large number of weapons, the owner of the tomb should also be a monarch in Guo Rui. M3 found two bronze ding inscribed by Gong Rui, which are second only to M 1 and M2 in size, without any weapons, and the tomb is only 4 meters away from M2, so it is speculated that M3's tomb owner may be a woman or the wife of M2's tomb owner Gong Rui. " Therefore, the academic circles agree that Liujiawa site should be the site of the late capital of Guo Rui. 20 19 12 13, the National Museum held the "Zhou Feng Remains-Shaanxi Liujiawa Archaeological Achievements Exhibition". In many news reports, I saw a picture of jade cong of Qijia culture. The Beijing News (20 19 12.6) reported that the gorgeous golden scepter of the Zhou Dynasty will be unveiled in Guo Bo next week, unveiling the mystery of "mysterious little country" Guo Rui. It is mentioned that a jade cong found in Liujiawa is different from the common jade cong with an inner circle and an outer circle. Only one side of it is square, engraved with two corners to stand up, and the other parts are engraved with abstract animal faces and lines. In the past, this kind of cong was only seen in Qijia culture, but the pattern is a feature of two weeks, which was transformed from Qijiayu. Qijia culture is a cultural type created by ancestors who lived about 4,000 years ago (between 3,600 and 4,300 years ago), and it is one of the most famous cultural relics in China. Qijia culture is distributed in Gansu, Qinghai and Ningxia provinces in the northwest of China, with a general scope of: east to Jingweishui River Basin, south to Bailong River, west to Hexi Corridor, east to Qinghai, north to southwest Inner Mongolia and south to Ningxia. There are many archaeological sites left in such a large area, among which Qijiaping in Guanghe, Xiping, Dahezhuang in Yongjing, Huangniangtai in Wuwei, Qinggangcha in Lanzhou, Zuiping in Qin 'an Temple, Haijiawan in Guyuan County, Ningxia, Gamatai in Guinan, Shangsunjia in Datong, Liuwan in Ledu and Mogou in Lintan are all very important Qijia cultural sites. Jade is a typical artifact of Qijia culture. Along with Longshan Jade in Liaohe River Basin and Liangzhu Jade in Jiangsu and Zhejiang Provinces, it is listed as the three ancient jade in China. The ancestors of Qijia had very unique skills in carving jade. They have mastered the thin slice cutting technology, drilling and pipe drilling technology of jade articles, and the ancestors of Qijia processed all kinds of jade articles, showing their unique culture. In particular, the ancestors of Qijia mastered a drilling technology, and the jade processed by this technology will leave a thin spiral. This technology plays a connecting role in the history of jade processing, and it is also the source of ancient jade processing technology in Xia, Shang and Zhou Dynasties. According to legend, the jade cong unearthed from Guo Rui's tomb in Liujiawa was buried together twice, with thick appearance and mysterious carving patterns. It's different from the jade cong we usually see. Gansu Provincial Museum exhibited a jade cong with an inner circle and an outer circle. People think it reflects the meaning of a round place, and jade cong was often used to worship heaven and earth in ancient times. The jade cong of Qijia culture unearthed from Guo Rui Tomb in Liujiawa has only two square corners, one of which is engraved with a standing human figure pattern. Sculptors in the Eastern Zhou Dynasty made full use of the lines of the square corners. People's facial features and bodies were symmetrically distributed along the square corners, and their hairstyles were opposite to those of Gu Zhuo, which seemed to be the image of nomadic tribes. Judging from other decorative patterns of Yu Cong, experts think this is a two-week style. The jade cong of Qijia culture has no ornamentation, which is essentially different from the complicated ornamentation of Liangzhu jade. The ancestors of the Qi family stood in the era of marching towards a civilized society. At this time, wealth was divided, tools were copper and stone, and a large number of decorative jade articles appeared. Obviously, this is a very developed cultural type. Since the discovery of Qijia site in An Tesheng on 1924, there have been more than 30 kinds of Qijia cultural jades discovered by archaeology, mainly including bi, Yan, piercing knife, Pei and ring, covering sacrificial utensils and living ornaments. Qijiayu has been proved to be the core of ancient jade culture in China. This jade cong is based on the jade cong of Qijia culture, which was processed and restructured by craftsmen in the Eastern Zhou Dynasty. However, I suspect that this jade cong was not made by a craftsman of Qijia culture, or it was damaged later, because there were only two square corners. It is inferred that it was buried underground 4000 years ago. After 1000 years and two weeks of excavation, craftsmen in the Eastern Zhou Dynasty carved decorative patterns with Zhou culture characteristics. 2700 years ago, it was buried underground with the monarch of Guo Rui. It was not discovered by archaeologists until 20 17. The discovery of Liujiawa Cemetery is adjacent to Guo Rui Cemetery in Liangdai Village, which provides excellent data for studying the communication between the vassal states in eastern Guanzhong and other ethnic groups, the change of political structure, population flow and local management mode in the Eastern Zhou Dynasty. Qijia cultural site was first discovered in Qijiaping, Guanghe, Gansu, indicating that an ancient jade road had been formed in Weihe River basin at that time. Source; Yellow race, water and China in the Yellow River and Loess.