Open-work charm
Open-work charms (simplified Chinese: 镂空钱 / 玲珑钱; traditional Chinese: 鏤空錢 / 玲瓏錢; pinyin: lòu kōng qián / líng lóng qián; lit. 'hollowed out money / elegant money') 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.