Yungang Grottoes get tech boost

Byzantine-styled copper goblets have been unearthed in the caves, and there have also been traces of Greek columns and Persian instruments.

"The Yungang Grottoes are a result of cultural exchanges between China and the rest of the world. When researching a multicultural hub like this, cross-disciplinary study is a consistent principle," says Sun Yu, professor of the College of Yungang Studies at Shanxi Datong University.