This is the second set of Taigu strings I have had the opportunity to borrow. This set is about 6-7 years old, and well played in prior. Despite being very worn and older strings, this set seems to still play quite nicely. String 4 began to show some wear at the bridge, so I cut the string and re-tied it at that point, and from the small sample piece, was able to separate the wrap from the core and get a close-up shot of each showing some of the strands a bit better. You can see these close-ups at the very bottom. If you want to see the harmonic analysis data for this set of strings, check out the Personal Qin w/ Taigu (6-7 Years Old) Silk Strings harmonic analysis page!