第dì

第 (dì) in Simplified Chinese (簡體) keeps its traditional form, a phonosemantic combination of the bamboo radical 竹 and the phonetic 弟 that originally referred to a bamboo tube used for ranking. Over time the character shifted to denote ordinal position, becoming the prefix for numbers in sequences such as 第一 (first) and 第二 (second). It also appears in words like 第几 (which number) and 等级 (rank), reflecting its enduring sense of order.