From the rather odd archaeological website, Ancient Origins:

China Daily reports the musical finds were uncovered in the tomb complex in Hubei province. A plucked string instrument was found, known as the “Se”. Thousands of years ago, the long, flat board instruments were fitted with 50 strings of twisted silk, and were instruments for the elite used in rituals and sacrificial offerings. Eventually the instrument evolved into the guzheng, notes Wikipedia. The se is one of the most important Chinese stringed instruments to be created, but there are very few modern musicians who can play the se.

Interesting, indeed! Read more here.