Kublai Khan decided to use the Phagspa script as the official writing system of the empire, including when he became Emperor of China in 1271, instead of the Chinese ideogrammes and the Uyghur script.
Kublai Khan besluttede at bruge Phagspa-skriften som det officielle skriftsystem i imperiet, herunder da han blev kejser af Kina i 1271, i stedet for de kinesiske ideogrammer og Uyghur-skriften.