建（jian）
Name meaning
建 (jian) means to establish, build, set up or found. In a given name it should suggest constructive ability and principled building, not aggression or mere ambition.
Practical naming use
Use 建 (jian) when the name should feel practical, constructive and institution-minded. It suits engineering, public service, business, scholarship, community work or a person who builds lasting structures. Pair it with a character that adds purpose or moral restraint.
Pair 建 (jian) with characters such as 建安 (Jianan) Jian'an, 建文 (Jianwen), 建明 (Jianming) or 建德 (Jiande). Avoid another forceful action character if the name becomes too hard.
Reference
MOE Revised Mandarin Dictionary, 建安文學 (jian an wen xue)
MOE Revised Mandarin Dictionary, 建安七子 (jian an qi zi)
Historical / name-use references
李建成 (Li Jiancheng)
Li Jiancheng (589-626) was the Tang founder Li Yuan's eldest son and crown prince, with a biography in Jiu Tang shu, juan 64. His name gives direct early Tang personal-name evidence for 建 (Jian).