• 冂(outer boundary; fence)
• 入(enter; go in)

Inside a fence, something that has already gone in becomes what is enclosed.

• 罒(net; mesh (variant form))
• 夕(evening; dusk)

Spreading a net at dusk to catch birds is the original meaning of the character.

• 冂(outer boundary; fence)
• 入(enter; go in)

Inside a fence, something that has already gone in becomes what is enclosed.

• 罒(net; mesh (variant form))
• 夕(evening; dusk)

Spreading a net at dusk to catch birds is the original meaning of the character.