Referenced In

The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano

"the very noble city of Saianfu, which well deserves a place in our book."

The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano

"Book II.  Part III. … Yang Chau—Siege of Saianfu—P’ao—Alans—Vuju"