中を

inside; through the interior

→ 中
phrase Common #2,657
inside; through the interior 中 refers to the inside of a place or thing; を marks the area being shown or guided through.
JA: この建物の中を案内します。
EN: I’ll show you around inside this building.

この中を案内する

Show someone around inside.

— The Wind Rises (2013)

中を見せない気かよ

You’re not going to show me what’s inside?

— The Wind Rises (2013)