What does it mean that tourism management is two disciplines under the first-class discipline of business administration?

The first-level discipline is a big category, which is equivalent to a major.

Two disciplines is a subclass of the following subdivision, which is equivalent to the direction. Generally, qualified schools set up their own.

Attachment: The undergraduate education specialty in China's colleges and universities is set at three levels: discipline category, discipline category (first-class discipline) and specialty (two disciplines).

There are several two disciplines under the first-level discipline, such as five two disciplines under mathematics, including basic mathematics and computational mathematics.

Business administration has a first-class discipline, including tourism management (two disciplines).