She did it on purpose, just to annoy Xun Lu. She didn't quite understand why she felt the need to do such a thing. All that mattered was the sense of satisfaction it brought her.
She had considered that Zuo Xingyun might be displeased, so she hid in the restroom for several minutes before leaving.
When she got back to the table, she noticed that Zuo Xingyun's expression was indeed sour. Before he could speak, she made her escape, "You eat slowly; I'll wait for you in the car."
The moment she got into the car, she put on her headphones and played music, feeling relieved and refreshed.
Zuo Xingyun came out soon after. She closed her eyes and pretended to be asleep, sensing that he was hesitating to start the car. She was puzzled but held back her curiosity without asking.
Suddenly, Zuo Xingyun said abruptly, "Come sit in the front."