正文：
孟建伟站在警局的审讯室中，手中握着那把老旧的皮质手枪，手指无意识地摩挲着枪身。他的眼神依然冷酷如初，脸上没有丝毫波动，仿佛他对今天的事件早有预料。
” you know what’s happening, big guy?” 小北的声音从身后传来，带着一丝颤抖。孟建伟转过头，目光落在小北略显苍白的脸色上，眼中闪过一丝掠过的寒光。
“你最好给我一个干净的答案. ” 他的声音依然如常，仿佛对这个简单的请求毫不在意。
审讯室的门被推开，又是一群警察走了进来。孟建伟的表情依旧平静，他只是将枪收好，然后慢慢说道：” you know why i am here, little brother.”
小北微微一愣，随即点了点头。他的手指在桌面上快速敲打，仿佛在整理着某种深沉的思考。
” you are to find someone. ” 孟建伟放下手中的物品，目光冷寒地扫视着周围的人。
” which one?” 小北的声音有些颤抖，但很快恢复了平静：” mr.xiao 北.”
” you know who i am talking about,” 孟建伟的目光穿透了审讯室的空气，” you have done this too far.”
小北的表情瞬间变得凝重起来。他的手指在桌面上不停地来回摩挲，仿佛在试图找到一种可以化解内心痛苦的方式。
” yes, i did. ” 他终于开口道，声音低沉而沙哑，” i have killed many people to protect my family.”
孟建伟的表情突然变得严肃起来：” then you are a very bad man.”
小北点了点头，他的脸上没有一丝笑容。他的手指轻轻敲击着桌子，仿佛在试图将内心的痛苦转化为一种理性的思考。
” your father was my friend,” 小北的声音低沉而沙哑，” he was always telling me to be careful. but you didn’t listen. now it’s too late.”
” you know what i mean,” 孟建伟的目光穿透了审讯室的空气，” you are not only responsible for your own life, but also for others. that is why this happened.”
小北的表情变得凝重起来。他的手指在桌面上不停地来回摩挲，仿佛在试图找到一种可以化解内心痛苦的方式。
” i am sorry,” 小北的声音低沉而沙哑，” please tell me what you did.”
孟建伟的目光再次变得严肃起来：” don’t you know? you are not the only one who is connected to this. there are many people who have been hurt, even killed because of you.”
小北的表情终于变得崩溃起来。他的手指在桌面上不停地来回摩挲，最终完全放松了下来。
” please tell me what you did,” 他的声音突然变得颤抖起来，” you said you were going to protect my family. but now it’s too late!”
孟建伟没有回答，他只是静静地看着小北，仿佛在等待一个无法言喻的决定。
