"You are the god who owns mountains and rivers and Haihe River" means that this figure has very strong power and influence, as profound as mountains and rivers and Haihe River. Mountains and rivers and Haihe River are very magnificent natural landscapes in nature. They have great power and magnificent scenes, so they are often used to describe a great man.

"I am a shining girl intertwined with the gods" means that the image of this girl is closely related to the gods and radiates light. The image of a glowing girl is usually an idealized figure, representing beauty, purity, wisdom and strength. This image is intertwined with the gods, suggesting that she has a special relationship with the gods, and may also have some mysterious power or talent.

Generally speaking, the meaning of this sentence is that this character is a great existence with the power and influence similar to that of a god, and this glowing girl image is closely related to it, representing a kind of beauty, purity and wisdom. This combination emphasizes the particularity and mystery of this role.