Khubilai discouraged the mongols in china from doing what? returning to mongolia harming chinese citizens marrying the chinese learning to read chinese

The correct option is "Learning to read Chinese"

Kublai Khan was the fifth and last great khan (1260-1294) of the Mongol Empire and the first Chinese emperor of the Yuan Dynasty (1271-1294). The empire was separated, creating four khanates, each governed by a khan and supervised by the great khan. The Golden Horde ruled Russia; Ilkhanate ruled the Middle East, the Khanate of Chagatai ruled the center of Asia and the Great Khanate ruled Mongolia and the whole of China. The empire reached its maximum extension with the conquest of Kublai of the Song dynasty in 1279.

In 1271 Kublai officially created the Yuan Dynasty, and established the new capital at Dadu (present-day Beijing) the following year. To unify China, Kublai began a huge offensive against the last remnants of the Song dynasty in southern China, and ended his conquest of China in 1279. As emperor of China, Kublai worked to minimize the influences of the regional governors who had immense power before and during the Song dynasty. His distrust of the Han ethnic group caused him to appoint officers from other ethnic groups.

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not sure might be he acquired the entire oregon territory from great britain