driving (horse)
馭 centers on controlling and directing a horse: the act of driving or steering a horse-drawn vehicle.
馭 combines 馬 (horse) with 又, which likely represents a hand holding reins, together expressing the idea of driving a horse.
The left side is a horse 馬, and the right side 又 looks like a hand holding reins. Picture a hand gripping the reins to drive the horse forward.
For ギョ, imagine a horse-drawn carriage with a large GYOza (dumpling) painted on the side: GYO -> ギョ, and the driver steers the horse while thinking of gyoza.
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