Outside the hotpot restaurant, the waiter chased after me and grabbed my sleeve.

"Sir, you haven't paid yet."
"I paid, scanned the QR code."
"...The system didn't receive it."
"Look at my phone record." I showed the successful payment page.
He hesitated for a moment and said into the walkie-talkie, "Front desk, check Table 302."
The walkie-talkie responded, "Table 302 ran without paying, just climbed out the window and escaped."
I looked down at my own table number—402.
The waiter's face turned pale.
I smiled, "So, since Table 302 ran without paying, you're covering for me at 402?"
He quickly let go, "Sorry, sorry."
I took a few steps and then turned back, "By the way, which floor is your store on?"
"Third floor."
I looked at the elevator buttons in my hand—fourth floor.
"Then how did Table 302 climb out the window from the fourth floor?"
He didn't answer. I was already in the stairwell.