The Qianlong era Muslim Jin Tianzhu said: "Other religions have found us inexplicable for thousands of years. Some say we are unorthodox, and have made up our rules.
乾隆年間，回人金天柱，見「各教莫能思吾教之行事，蓄疑團於千百年矣而莫釋，…… 有謂不遵正朔，私造憲書，… … 有謂異言異服，揀擇飲食。