According to Greek mythology, it is said that when Pandora's box is opened, all evils are released.

He opens the gacha box every day to get new items.

He calls that business a cash cow.

The Ark of the Covenant is a sacred box described in the Old Testament.

He is a box believer, so he buys a new game as soon as it comes out.

He put money into the offertory box.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

The Paleogene period was a very important time in the history of the Earth.