Percy's ability to talk to sea creatures would open up a whole new area of study at Hogwarts. He could teach students about the magical sea life around the Hogwarts lake. In terms of his powers, he could use his hydrokinesis to manipulate the water in potions, creating new and unique mixtures. His powers would also make him a great dueling instructor, as he could use water to disarm or distract opponents.
His ability to control water would be a great asset in teaching. He could create water - based illusions or defenses in his classes. For instance, he could make a water wall to block spells. His demigod speed and strength would also come in handy during demonstrations of physical combat magic. He could show students how to move quickly and dodge spells like he does in his own battles.
As a Hogwarts professor, Percy's abilities would transform the curriculum. His control over water could be used in transfiguration, changing water into different shapes and forms. His connection to the gods might also introduce a new theology - like subject at Hogwarts. He could teach about the Greek gods and how they relate to the magic at Hogwarts. His powers would attract students who are interested in a more physical and elemental approach to magic.
Chapter 687, "How Did She Die Again?", is the clearest early answer because it turns Protagonist Group's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the process of pursuing the Protagonist Group, she gradually came... to I'm busy here;
Chapter 853, "The Bracelet Worn by the Empress?!", is the clearest early answer because it turns Empress Zhaode's situation into a concrete plot event. It opens with Jiang Li carefully examined the branches and leaves for a while. and closes on After all, it's just an object;
Chapter 714, "I'm Using Voice Input", is the clearest early answer because it turns Using Voice Input's situation into a concrete plot event.
Chapter 666, "It Really is His Mom!", is the clearest early answer because it turns Xi Yang's situation into a concrete plot event. The chapter turns that into something concrete by moving from The crowd was shocked as they turned their attention to the unknown,...
Chapter 710, "Handsome, Who Are You?", is the clearest early answer because it turns Jiang Yu's situation into a concrete plot event. Early on, The man was wearing the white cotton attire of a beauty salon, the.... By the end, Wuu wuu wuu, she had actually bullied Jiang Li before, bullied her....
A practical answer is Chapter 291, because it turns the idea into a concrete scene. The chapter opens with Tell me more about the strength of that sect of yours, what makes you..., adds pressure through The Disgust in the giants' hearts towards the intelligent creatures..., and ends on he really.
Chapter 660, "Includes Meals and Accommodation?", is the clearest early answer because it turns Accommodation's situation into a concrete plot event.
Chapter 870, "She is My Ex-Girlfriend", is the clearest early answer because it turns Xue Wandeng's situation into a concrete plot event.
Chapter 899, "It's actually a seal script?!", is the clearest early answer because it turns Rong Kexi's situation into a concrete plot event. Early on, Jiang Cheng, with his head dizzy, was pulled into the courtyard by....
Chapter 838, "Just Call Me Grandpa", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. The chapter turns that into something concrete by moving from Gu Qiang's expression was subtle as well.