The Sanxingdui Ruins site in Sichuan province is generally considered one of the most important archaeological     1    （site）along the upper reaches of the Yangtze River. Six pits（坑）    2    （date）back 3,200 to 4,000 years were newly discovered there, including over 500 artifacts.

The site     3     covers an area of 12 square kilometers was discovered in 1929. Major breakthroughs     4    （make）in 1986 with the discovery of two pits    5    （believe）to be for sacrificial ceremonies. There are many similarities among the     6    （recent）discovered pits and the two found in 1986,     7     terms of the types of artifacts unearthed. Divine trees and bronze masks were found once again. The recent discoveries     8    （far）confirm the theory that the pits were used for sacrificial purposes.

Nevertheless, some new types of artifacts have been unearthed. In the No 6 pit, a wooden box covered in cinnabar（朱砂）    9    （bring） a new mystery. A plan to open it is still being drafted. Other important items include decorative gold items.     10    （this）artifacts show the Sanxingdui site had a close connection with Central China, but it also marks an original ancient civilization with strong creativity.