便捷
biàn jié · HSK 7
convenient and fast
⚡✈️ Sounds like been-jet — fast as a jet, zero hassle
biàn jié echoes been-jet. A jet gets you there fast with no fuss — that is exactly 便捷: quick and hassle-free.
便 — person 亻 + change 更
A semantic compound: 亻(person) beside 更 (to change/replace). The original sense was a person making things easier or more convenient by adjusting them. From 'convenient' it extended to 'then/thereupon' (biàn) and to bodily 'discharge' (as in 大便).