The Chinese word "警惕" is formed through the semantic combination of its two constituent characters: "警", which denotes warning or alertness, and "惕", which conveys caution or wariness. Together, they create a compound where each character reinforces a similar idea, resulting in a meaning that emphasizes heightened vigilance and proactive awareness against potential dangers. This formation leverages the inherent meanings of the characters to produce a unified concept of being watchful and prepared.