塀へいの中なか

expression, noun, noun which may take the genitive case particle 'no'

inside the walls; within prison

Literally 'inside the fence/wall', but often used as a euphemism for being in prison. Can also refer to any walled compound.

• 彼かれは塀へいの中なかにいる。

  He is in prison.

• 塀へいの中なかの生せい活かつは厳きびしい。

  Life inside the walls is harsh.