汉 is in 汉语 (Hànyǔ, Chinese language), 汉字 (hànzì, Chinese characters), 汉族 (Hànzú, Han ethnic group), 武汉 (Wǔhàn, Wuhan city), and 好汉 (hǎohàn, hero/brave man).
culture
The Han Dynasty was one of China's golden ages, lasting over 400 years. The Han ethnic group, named after it, makes up about 92% of China's population.
Three water drops on the left — the contracted form of 水. Indexing radical: 汉 originally named the Han River (汉水), the major tributary of the Yangtze that gave its name to the Han dynasty and, by extension, the Han people and their language. Same radical family as 河, 海, 江, 湖.
Right 又 — a stylized right hand, two strokes. In the simplified 汉 this two-stroke piece replaces a much more elaborate phonetic in the traditional 漢 (an opaque graphic of a person under fire). The modern 又 here is a 1956 reform shorthand — graphic placeholder rather than a true sound or meaning contributor.