What language were Yuan government decisions usually written in first?

During the Yuan dynasty, government decisions, ordinances, and decrees were primarily drafted in the Mongol language. Because few of the ruling Mongols were proficient in Chinese, and relatively few Chinese officials mastered the Mongol language, the administration relied heavily on interpreters and translators.

When these documents were prepared, a Chinese interlinear version was typically added to the original Mongol text. This Chinese version was written in the colloquial language rather than the formal documentary style and followed the Mongol word order, which often made it appear foreign to native Chinese literati.1