Some scholars have speculated a possible Hellenistic link to these sculptures, because of the lack of life-sized and realistic sculptures before the Qin dynasty. They argued that potential Greek influence is particularly evident in some terracotta figures such as those of acrobats, combined with findings of Indo-European DNA in Xinjiang and rare bronze artifacts made with a lost wax technique known in Greece and Egypt. However, this idea is disputed by scholars who claim that there is "no substantial evidence at all" for contact between ancient Greeks and Chinese builders of the tomb. They argue that such speculations rest on flawed and old "Eurocentric" ideas that assumed other civilizations were incapable of sophisticated artistry and thus foreign artistry must be seen through Western traditions.