The Yellow Eyebrowed Monk from DGSD was famed for using the Mighty Gum Gwong (i.e. Vajra) Finger. During the time of DGSD, he was considered the supreme practitioner of this particular skill.
The Mighty Gum Gwong Finger, however, was a Shaolin martial art (and as such, was featured much more prominently in HSDS). The Yellow-Eyebrowed Monk did not belong to the Shaolin Temple, but a monastery known as the Nim Wa Temple within the Dali Kingdom.
Did the Yellow-Eyebrowed Monk originally train at Shaolin, however? If not, how did he manage to learn one of Shaolin's most famous skills?