中継
ちゅうけい · chuukei · JLPT N1 · noun
relay
📡 中 middle + 継 pass on = a link passed along through the middle
継 also means succession, as in inheriting. A 中継 station sits in the middle of a line and passes the signal along.
中 — vertical stroke 丨 through enclosure 口
Pictograph of a banner or pole piercing the center of a target or territory, depicting the idea of 'middle' or 'center'. The horizontal frame represents boundaries, and the vertical line marks the central axis. The meaning extended from spatial center to 'middle, central, China' (中国, the Middle Kingdom).