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.