The Wei Kingdom was one of the three major states during the Three Kingdoms period in ancient China, which lasted from 220 to 280 AD. It was founded by Cao Cao, a prominent warlord and poet, who played a crucial role in unifying northern China. The kingdom was known for its strong military and administrative systems, which helped it maintain power during a time of great turmoil. The capital of the Wei Kingdom was Luoyang, a significant cultural and political center. After Cao Cao's death, his son Cao Pi officially declared the establishment of the Wei Kingdom, marking the beginning of its rule. The kingdom eventually fell to the Shu and Wu kingdoms, leading to the end of the Three Kingdoms era.