Sure, here is the translation for the provided text:
"Why do we have to increase the price? We already agreed on it, are you going back on your word?"
The scholar was furious, burning with anger. No amount of good manners could maintain his composure. After being left hanging for three days, he now had to pay extra for the challenge, which was incredibly frustrating.
Chen Nan replied confidently, "I assumed you just wanted to ruin my reputation, so I charged you thirty thousand spirit stones, but you're coming to kill me, so it's reasonable to ask for more money, right?"
The scholar listened and realized it made sense, but he just felt aggravated and asked through gritted teeth, "Then how much more do you want?"
"At least double."
"Fine, I'll pay!" The scholar said through clenched teeth, his desire to kill Chen Nan rising to a new level.
"Enjoy this moment while you can, once we're on the martial arts arena, I will definitely kill you!" He thought to himself.
