How to explain the second sentence in Song of Triumph?

The first sentence should be straightforward, you know.

The second sentence is different. The key is bullfighting.

To tell you clearly, bullfighting refers to the constellation!

Constellation refers to the sky!

Loyalty is the greatest morality in the world.

In fact, there is no absolute translation of classical Chinese, just grasp the key points and do it according to your own understanding.

PS: Of course, you have to refer to the context when translating.