Historical Records
Literary attestation
The encyclopedia reproduces a note to the Yuan poet Nai Xian's “Song of General Dalu Shooting a Tiger.” The note says that General Dalu's family had led the Naiman, that he became commander of Suizhou and Yingzhou after submitting, and that Yuquan was his great-grandson. Because this is a quotation transmitted by a secondary source, it should not be treated as a direct verification of the original poem.
