156) 由

you

156ax) 扌

shou

156a) 抽

chou

draw out; pump

hand 扌=手³¹[shǒu] + underground water well/cause 由 [yóu]

Signifies the act of drawing water by hand (扌) from an water well (由).

156bx) 邑

yi

156b-147d*) 邮

you

mail

well/cause 由¹⁵⁶[yóu] + town 阝→邑^92d[yì]

The village (邑) well (由) was the best place for the women to exchange information and gossip. That’s how this character came to mean ‘mail.’