The Chinese word "城堡" is formed by combining two characters: "城", which originally denotes a walled city or fortified enclosure, and "堡", which refers to a fortress or stronghold. Together, they create a compound where the meanings blend to evoke the image of a secure, fortified structure, typically a castle, by emphasizing both the protective walls and the defensive stronghold aspects. This combination leverages the conceptual synergy between the two elements to precisely convey the idea of a castle as a grand, fortified residence or fortress.