The Clingy Shark Brother

[The female protagonist travels through time + the male protagonist is a shark + a fantasy era + no system] When I first traveled through time and became a princess, I naively thought that I could live a carefree life with fine clothes and fine food, without having to worry about money. I could just enjoy the glory and wealth every day and be a carefree rice insect. However, something unexpected happened, and when I was ten years old, a huge change completely shattered my dream. My father died in battle; my mother passed away due to dystocia, leaving my young brother and me to depend on each other. Faced with this sudden change, I had to transform from a spoiled princess to an eldest sister shouldering heavy responsibilities. In order to protect my brother from growing up safely, I resolutely embarked on a difficult road. I practice day and night, study hard, study the art of elixirs, refine the art of refining weapons, and recruit talents from all over the world, just to pave a smoother path for my brother to become a king. I know very well that only by making him a wise king can this war-torn country return to peace and allow the people to live and work in peace and contentment. However, the general trend of the world is in chaos. For decades, wars have continued, people have been displaced, and people are in dire straits. In order to end this endless disaster, I decided to start from the root. A negotiation with the Sharman Emperor might be able to calm down the war. So, I bought the Mermaid Emperor Cangming at a grand auction at no expense. I thought this was a shortcut to solve the problem, but I didn't expect that things would develop unexpectedly...