evidence such as Hellenistic artworks found at various sites in the Tarim Basin, for example, the Sampul tapestry found near Khotan, tapestries depicting the Greek god Hermes and the winged pegasus found at nearby Loulan, as well as ceramics that may suggest influences from as far as the Hellenistic kingdom of Ptolemaic Egypt. One suggestion is therefore that the early migrants to the region may have been an ethnically mixed people from the city of Taxila led by a Greco-Saka or an Indo-Greek leader, who established Khotan using the administrative and social organizations of the Greco-Bactrian Kingdom. Arrival of the Saka Surviving documents from Khotan of later centuries indicate that the people of Khotan spoke the Saka language, an Eastern Iranian language that was closely related to the Sogdian language (of Sogdiana); as an Indo-European language, Saka was more distantly related to the Tocharian languages (also known as Agnean-Kuchean) spoken in adjoining areas of the Tarim Basin. It also shared areal features with Tocharian. It is not certain when the Saka people moved into the Khotan area. Archaeological evidence from the Sampul tapestry of Sampul (Shanpulu; / ), near Khotan may indicate a settled Saka population in the last quarter of the first millennium BC, although some have suggested they may not have moved there until after the founding of the city. The Saka may have inhabited other parts of the Tarim Basin earlier – presence of a people believed to be Saka had been found in the Keriya region at Yumulak Kum (Djoumboulak Koum, Yuansha) around 200 km east of Khotan, possibly as early as the 7th century BC. The Saka people were known as the Sai (塞, sāi, sək in Old Sinitic) in ancient Chinese records. These records indicate that they originally inhabited the Ili and Chu River valleys of modern Kyrgyzstan and Kazakhstan. In the Chinese Book of Han, the area was called the "land of the Sai", i.e. the Saka. According to the Sima Qian's Shiji, the Indo-European Yuezhi, originally from the area between Tängri Tagh (Tian Shan) and Dunhuang of Gansu, China, were assaulted and forced to flee from the Hexi Corridor of Gansu by the forces of the Xiongnu ruler Modu Chanyu in 177-176 BC. In turn the Yuezhi were responsible for attacking and pushing the Sai (i.e. Saka) south. The Saka crossed the Syr Darya into Bactria around 140 B.C. Later the Saka