Why a six-side view matters

This is an English reading overview of the Chinese article, rather than a complete translation. The Chinese source has been updated since this overview was prepared; consult the original for the latest details.

The central idea

A walnut is a three-dimensional object. The tip, base, edges, reverse and overall form can reveal conditions hidden by one flattering angle. Request clear views of the actual pair before buying, and use the video alongside a written explanation of known repairs or blemishes.