牽
ケン, ひ.く

pull, tug, drag, lead by hand

JLPT0 G13 S0 F5000

As per 玄# (link) + an element combining 牛 cow and 冖 cover (→ bar used to hold down the horns of cattle; compare 衡) → *drag/draw* a cow with a rope → *lead*. Also, *be involved in/with* (← be directly connected ← drag with a rope).

[Full Kanji Etymology List]