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Summary:

Yuanwu said, "A monk asked, "What is the task in the patch robe?" Xianglin said, "Fire burns a mountain in December."

Yunmen said, "The twenty-fifty day of December-look look-the last month is ending."

Xianglin is a son inheriting his father's [Yunmen's] business.

Zen Teaching: https://www.amazon.com/Measuring-Tap-Chan-Buddhist-Classic-ebook/dp/B07RYFN7JM/

Reddit Post: https://www.reddit.com/r/zen/comments/wxucan/measuring_tap_sounding_strike_yuanwu_decodes_teh/

Zen Lineage: www.reddit.com/r/zen/wiki/getstarted