Metal nylon strings removed from my Zhang Yong guqin. Silk stringsmounted.

Metal nylon strings removed from my Zhang Yong banana leaf shaped guqin. (Previously used) Heavy gauge Jing Wu silk strings mounted. Pleasant surprise! It still has long sustain in the notes. It still sounds quite audible. Lesson learned: pick a loud guqin mounted with metal-nylon strings and it'd still be quite loud with silk strings. Hahaha!