"What did you do after that?"
"..."
"Miss Zhang, please answer my question."
"I... I looked up Chen Yiqian's address, her family's address. Not the exact address, just... I knew roughly where it was. I went to that neighborhood and looked around... I didn't know what else to do. I just wanted to take a look. Then I heard people there talking about... about what had happened to Chen Yiqian's family... I... I don't know what came over me, but I followed them... I... I went to her front door... I tried the key... I tried it, and it worked. I could open the door... At the time... I ran away. I ran away..."
"Where's the key?"
"I brought it with me. Then..."
"Then?"
"Then I... threw it away. I threw it in a trash can..."
"Which trash can?"
"I don't know. I left her place and ran with my head down for a while. I think... I turned two corners, then saw a trash can by the street. I threw it in there. Later..."
"What happened after that?"
"I... I realized I'd thrown away the wrong keys. I don't know how it happened. I'd thrown away my own set, while Chen Yiqian's set was still in my bag. I was in the capital, at work, when I finally noticed the set at the bottom of my suitcase. I thought they were my house keys, but they weren't. They were Chen Yiqian's! I... I... I might have mixed them up that day. I don't know... I don't know why it happened..."
"What did you do with those keys afterward?"
"I threw them away. I threw the keys away. It must have been in the capital. I saw the messages in the group chat, saw Wang Linping and the others talking.