Just write it like 'mph' or 'miles per hour' depending on the context. It's usually pretty straightforward.
In fiction, miles per hour can be formatted as 'mph' for simplicity. However, if you want to emphasize the measurement or make it more explicit for the reader, you should go with 'miles per hour'. It all comes down to how you want to present the information within the story.
Chapter 152, "Mirror Immortal's Killing Intent, Who Has Been Framed?", is the clearest early answer because the violence around Xia Hong becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with They plan to wipe us out in one fell swoop!" Xia Hong turned back to... and follows through with Seeing the iron arrow pierce through the tree, Xia Hong's eyes first....
Chapter 142, "%, The Boiling Brought by the Martial Arts Training Ground 【8000 Major Chapter Appeal for Subscription】", is the clearest early answer because it turns Intermediate Snow Mane's situation into a concrete plot event. A useful checkpoint is the way the scene starts with This time, after using the Cold Beast Blood for the second time, Xia... and follows through with The gazes of over a thousand people could be said to be focused on....
Chapter 3, ", Indistinguishable Truth from Falsehood [Please follow and rate!]", is the clearest early answer because the hidden truth stops feeling like mere subtext. A useful checkpoint is the way the scene starts with What's happening?" Xia Hong couldn't help but feel deeply anxious at... and follows through with It should be quite obvious, right?.
Chapter 119, "Running Out of Materials, Archery Contest [Warm Sun Giant's Additional Chapter 2/10]", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter gives readers a real answer by opening on Everyone stared in amazement at the Frost Wolf on the ground, unable... and ending on These people's reactions are a bit over the top!" At the entrance of....
Chapter 69, "Xia Chuan Awakens", is the clearest early answer because it turns Xia Chuan Awakens's situation into a concrete plot event. Early on, Brother, it feels like there's a lot more in my mind now..." Before.... By the end, Amid his heartache, he also felt an immense sense of relief..
Chapter 144, "Self-serving at the Expense of Others, He Meng's Furious Rage [Sorry for Being Late]", is the clearest early answer because it turns Thunder Kui's situation into a concrete plot event. It opens with Those bastards dare to ambush me!" Under the big tree, He Meng's face... and closes on Evidently, they were both expressing their claim to the torches'....
Chapter 185, "New Residence, Land, Arrow Bamboo Forest", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from Hearing Xia Chuan's words, everyone immediately stopped talking. to Xia Chuan laughed lightly at this, seeing the eager looks on....
Chapter 144, "Self-serving at the Expense of Others, He Meng's Furious Rage [Sorry for Being Late]", is the clearest early answer because it turns Teng Jiao's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Don't touch that Teng Jiao, it's poisonous!" "The Hunting Team's... and follows through with Everyone goes to the south to find, find Great Xia's camp, we must....
Chapter 142, "%, The Boiling Brought by the Martial Arts Training Ground 【8000 Major Chapter Appeal for Subscription】", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. The chapter gives readers a real answer by opening on Previously, Xia Hong was unwilling to use the wooden mannequin to... and ending on Once fifty people exchange, the martial arts training ground will....
Chapter 537, "Dunters", is the clearest early answer because it turns Commander's situation into a concrete plot event. The chapter gives readers a real answer by opening on The battlefield was a chaos of fire, steel, and claws, yet through... and ending on It lifted its head slightly, tilting it toward the horizon.. In story terms, the chapter closes with Humanity against Demons.