D1: How to string a guqin – part I: mechanism; how to unstring (古琴上弦一：原理；如何拆弦)

This is the first part of the lesson on how to string a guqin. It introduces the mechanism of the guqin stringing, how the strings are fastened to the instrument, and how they are adjusted, etc. It also introduces how to take the strings off the instrument.