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Derived from Cloud Feather

I want to read a book similar to "Zongyin Zhizhi Guanyin". If you want to read a derivative of Yun Zhiyu, it's best to read something similar to the one about Avalokitesvara on the Gangshang. If you're interested, you can also read this one. I think the content of Yun Zhiyu is super interesting.