There is a close relationship between the Tu nationality and the Mongolian nationality. Among Huzhu Tu people, there is a legend that their ancestors came from Mongols. Genghis Khan was the general who led Park Rongsu (Geletai) to stay in Huzhu County. Later, he married the local Hall people and gradually multiplied into Tu people. In the past, Turks worshipped Geri Park Jung Su as the ancestor of their own nation.

It is also recorded in China's historical records that Genghis Khan's Mongolian army came to Xining. At that time, Huzhu County belonged to Xining Prefecture, which can be confirmed by legend. The Mongols in Andingxu in Ming Dynasty were attacked and moved to Huzhu Tu Autonomous County. As for the Hall people, it was originally a general term for Tibetans to refer to nomadic people living in northern Tibet. Tibetan historical records have always been used to refer to Uighur or Mongolia, but in modern times, they have specifically referred to Tu people. Huzhu County, Huertan, Huertan, Huerji, Huerchuan and other places in the Turkish region are named after the Hall people. According to textual research, the legendary Hall people of the Tu nationality are probably Tuyuhun people. This is consistent with the Turks in Minhe County calling themselves "Tukun". Of course, some people think that Hall is the homonym of Hu. It originated from Tubo, Xixia, Qidan, Mongolia and Xiongnu tribes, namely Zhaibu and Mongolia in Liao and Jin Dynasties. This pushed the national origin of the Tu nationality back to an earlier period. However, the unified understanding is that Tuguhun was the main body in history, and later it absorbed some national elements such as Qiang, Tangut, Tibet, Mongolia and Han to form and develop.