Chinanews, Beijing, Nov. 20 – According to Guangming Daily, many precious bronze vessels have been found at a historical site in Ningbo, Zhejiang Province.Experts discovered the heritage site in 1988, which has a history of 6,000 years Experts said the site has an important scientific value in pre-history research.Archeologists started evacuation of the site on October 10. They have found some 600 coins of the Tang Dynasty (618-907) and bronze vessels of the Shang and Zhou dynasties (C. 1600 B.C.-256 B.C.). Currently the site is still under investigation.