Li Gang, a research fellow with the Shaanxi Provincial Archaeological Research Institute, said that this board might have been made from a floor tile, and that it did not belong to the royal family since the carvings are too rough. Li said the board could have been made by the tomb guards who played go to pass the time. "That proves that go was being played not only by nobles, but also by ordinary people like tomb guards, more than 2,000 years ago", Li noted.