"A gentleman strives for self-improvement" is a sentence in the Book of Changes. In the ancient Book of Changes, "a gentleman strives for self-improvement" is not "striving for self-improvement", but "striving for self-improvement". Why did the ancients use "self-improvement" instead of "self-improvement"? Because "Xinjiang" is a common word, "Xinjiang" and "Qiang" are consistent, but there are differences. Although "Xinjiang" and "Qiang" have a strong meaning, "Xinjiang" has a strong meaning and "Qiang" has only a strong meaning. Later generations may change "Xinjiang" to "Qiang" to highlight their strong intentions. Although the meaning is similar, it has lost its ancient meaning.