佢哋喺呢個比較簡潔流暢嘅影片裏面強調 其實警察坐喺冷氣辦公室 就能夠遙控地監控著某人 而被監聽嘅人係唔知情嘅
In this succinct and fluid video, they emphasize that in fact, the police can remotely monitor someone while sitting in an air-conditioned office, and the person being monitored is unaware