An exhibition in Shanghai featuring replicas of the Xian terracotta warriors is under investigation for the questionable origin of its exhibits. It follows dozens of scandals in recent years related to exhibitions of the centuries-old figures involving both genuine warriors and copies. Authorities were spurred into action this time when visitors to the 'Qin Dynasty Terracotta Warriors Culture Exhibition' at the Longhua Tourism Centre called a local newspaper to complain about the poor quality of the exhibits. The visitors said the copies had a rough appearance and were low quality, according to the Shanghai Youth Daily. The exhibition started this week and presents 400 reproductions made to original scale and more than 20 of about twice real size. The report quoted an official as saying that copies of state relics had to be authorised by provincial-level authorities and it would be impossible to get approval for such a large-scale reproduction. The Shaanxi Cultural Relics Bureau sent a representative to investigate the exhibition's legal status, the paper said. The newspaper quoted the organiser, the Shanghai Shengjing Culture and Communication Company, as saying their exhibits were supplied by the Shaanxi Tianding Cultural Relics Replication Products Company, which has since denied links with the Shanghai firm. But Sun Jian, general manager of the Shanghai Shengjing company, contradicted the newspaper report yesterday, saying their displays were produced by two other companies: the Qinyong Replication Handcraft Company and the Lintong Yuyuan Tourism Company, both of which were based in Lintong near Xian. 'We have the photocopies of their business licences and they are legal [terracotta warrior] replica producers.' He said that since they were displaying copies, he had not made any application to any authority, because 'it was unnecessary'.