There's more than one set of keys to the house.
"As Cheng Yanzhi spoke, he placed a glass of water on the table and sat down next to Xia Yunsheng. He lovingly looked at her, "Are you jealous about that? I will change the locks tomorrow."
Xia Yunsheng's hair was slightly dishevelled. Cheng Yanzhi reached out to tidy it up for her, but before his hand could touch her, she defensively pushed it away.
He missed his target, but laughed, "Sheng, you're so funny when you're jealous."
"I'm not jealous, but... I have a few questions for you." Xia Yunsheng looked at Cheng Yanzhi with a complicated expression.
Cheng Yanzhi didn't know why, but looking at her like this, he had an inkling of what she might ask.
His face turned serious, and his gaze became extra cautious, "Did she tell you something?"
"What do you think she might have told me?" Xia Yunsheng smiled enigmatically.
