Why is "Open-work charm" trending?

Wikipedia Overview

Open-work charms are a type of Chinese, Japanese, Korean, and Vietnamese numismatic charms characterised by irregularly shaped "holes" or "openings" between their design elements known as openwork. The design of the amulets represent yin while the holes represent yang and their general purpose was to attract good fortune and ward off evil spirits and misfortune. Unlike most other types of Chinese numismatic charms which usually tend to have square center holes if they are holed, open-work charms tend to almost exclusively have round center holes though open-work charms with square center holes are known to exist and certain thematic open-work charms that feature human-made constructions mostly told to have square holes. Another distinctive feature of open-work charms is that they are almost purely based on illustrative imagery and only a small minority of them contain legends written in hanzi. While most other forms of Chinese numismatic charms are made from brass, open-work charms are predominantly made from bronze.