工gōng

工 (gōng), meaning "work" or "worker," is believed to be a pictograph of an ancient measuring tool, possibly a T-square or carpenter's ruler used in construction. The character shows a horizontal bar connected to a vertical shaft, representing a simple yet essential tool for measuring and building. Over time, the meaning extended from the tool itself to the people who use tools — workers, craftsmen, and eventually the concept of work in general. This character also serves as a phonetic component in many other Chinese characters, carrying its sound into compounds related to construction and craftsmanship.