Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

What was the philosophy no the huihui?
What was huihui?

What concept did philosophers in antiquity use in the study of stationary and moving objects or rather to study simple machines?
What concept did philosophers in antiquity use to study simple machines?

Who accepted the Great Yuan dynasty no rejected the Mongolian Borjigin clan?
Who rejected the Mongolian Borjigin clan?