What's the difference between Baosteel Group and Baosteel?

Baosteel Group is the major shareholder of Baosteel, and 70% of Baosteel is the controlling shareholder.

In this way, for example, before Baosteel went public, there were four assets ABCD, Baosteel Group =ABCD, and later listed as assets A, Baosteel Group =A, and Baosteel Group =70%A+BCD, so Baosteel is the son of Baosteel Group.

The same is true of Shenhua and the like.