Gold ornaments may have been used to decorate coffins or for horse armor, said Wang Hui, head of the Gansu Provincial Institute of Cultural Relics and Archaeology.
The Qin people might have had exchanges with middle and western Asia. At that time, Chinese took bronze and jade as symbols of wealth while people in middle and western Asia valued gold more, Wang explained.
The tombs were badly looted during the 1990s and a large number of relics, including the gold ornaments, were smuggled abroad.
These relics had been donated to the Guimet Museum in Paris by Pinault and Deydier when China approached France for their return in 2014. French law forbids national museums giving away their collections.
Through careful negotiation, however, the two sides found a way out. The donations were withdrawn and the artifacts were returned to their previous private owners, removing the legal barrier to getting them back to China.
"This is just the beginning for the return of the large number of smuggled Chinese cultural relics being scattered across the world," said Wang.
Establishing a chain of evidence with archaeological analysis and technological authentication and facilitating this return through international cooperation sets a good example, he believes.
The State Administration of Cultural Heritage will negotiate with more countries and aim to prompt more smuggled relics' return to China through diplomatic and legal means, according to Li Xiaojie.