145) 门

men

door

Palaces and large houses had doors that came in a set of two, unlike a “single door 户 [hù].”

145a) 们

men

<suffix>

person 亻⁷⁰[rén] + door 门 [mén]

“门” is a door that is only complete as a set of two, so this character is a suffix showing plural usage of people (亻). It is always used after a pronoun or noun indication a person

145b) 问

wen

ask

door 门 [mén] + mouth 口¹⁶[kǒu]

To open a door (门) and ask loudly (口) if he is at the right house.

145c) 间

jian

between; room

door 门 [mén] + sun 日²¹⁸[rì]

the sun (日) shining through and between a space in the room door (门).

145dx) 竹

zhu

145d) 简

jian

simple

bamboo 竹²¹⁶[zhú] + between/room 间 [jiān]

Before paper was invented, sentences were simple because the Chinese wrote on a flat bamboo (竹) with a little room/space (间) 

145y) 耳

er

145y-10f*) 闻

wen

hear

door 门¹⁴⁵[mén] + ear 耳 [ěr]

one has to put his ear (耳) on the door (门) to hear what is going on inside. ‘Sound’ and ‘smell’ are all external stimuli, and in Chinese, share the same pronunciation, which is why this character means both.