Dùn yín was taught to JB as a fast press and release by the left hand designed to accentuate the half beat of a note. If a quarter note bears the marking for dùn yín, the Dùn yín is played at the 1/8th note mark. The only source that lists it is Ferguson’s Source E but Ferguson does not provide an explanation. It could be related to diăn. Ferguson’s Source E mentions Shi dun and Xu dun but offers no explanations.

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