What do you mean by business 12 hotel business?

Talking about things is a popular online language in China, which is often used to describe private meetings or sexual activities between men and women. "12 o'clock hotel" refers to a hotel that is open for a long time until late at night at 12 o'clock or later. It is often used as a private undisclosed place for the above activities. Hotels are commercial organizations that provide users with safe and comfortable spaces for a short rest or sleep.