Referenced In

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

"… also mentioned is the Sa-lê-chu River, both identified as being in Mongolia."

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

"… the Sa-li River (not stream) is thrice mentioned, together with the Sa-lê-chu River, both in Mongolia."