1
lt;lt;The pronoun of the Book of Changes gt;gt;. Because of "Yi. "Xi Ci Shang" has the sentence "The saint washes his heart with this", so it is called
2
There are books and grass growing in the court; (Wang Feng)
In the chest It has its own Heart-Cleaning Sutra. (Su Shi)
--lt; Anonymous collection gt; Inscribed by Wang Feng and Su Shi in the study room
3
"Blessed are the pure in heart!"
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