25歲的深圳白領女子趙蘭，平日獨居在自己的公寓中，生活習慣比較隨意，經常在家穿著寬鬆的衣物，並且幾乎從不拉窗簾。她並不知道，這樣的生活習慣早已被對面樓的男子張帥盯上。張帥透過望遠鏡，長時間窺視她的一舉一動，逐漸產生了不良的想法。

張帥本身感情生活並不順利，在一次相親失敗後心情極度低落，開始酗酒借酒消愁。某天深夜，他在酒精與扭曲心理的驅使下，決定對趙蘭下手。他先偷偷關掉趙蘭家的水管總閥，製造用水故障的假象，隨後假扮成物業人員敲門，以維修為由進入屋內。然而進門後，他卻亮出隨身攜帶的刀具，企圖對趙蘭施暴。

面對突如其來的威脅，趙蘭奮力反抗，並且大聲警告對方自己要報警。這激怒張帥，他失去理智，連捅趙蘭五刀，造成她當場倒地，最終不治身亡。案件曝光後，引起社會震驚與憤怒，張帥因犯下極其惡劣的故意殺人罪，被法院判處死刑。

這起悲劇再度敲響都市獨居安全的警鐘。對於獨自居住的人來說，日常生活中應注意保護隱私，例如拉好窗簾、避免長時間暴露居家狀態；同時對陌生人上門保持高度警惕，即便對方自稱是物業、快遞或維修人員，也應先透過門鏡或視頻確認身份；此外，深夜或在家時隨時保持門鎖牢固，並準備好緊急聯絡方式與防衛工具。唯有時刻保持防範意識，才能在危險發生前為自己爭取更多的安全保障。

Zhao Lan, a 25-year-old white-collar worker living alone in Shenzhen, had a relaxed lifestyle at home, often wearing loose clothing and almost never drawing her curtains. She was unaware that her neighbor in the opposite building, Zhang Shuai, had been secretly watching her for a long time through binoculars and gradually developed malicious intentions toward her.

Zhang Shuai’s own love life was troubled, and after a failed blind date, he became deeply depressed and began drinking heavily. One late night, under the influence of alcohol and his distorted mindset, he decided to act. He first secretly shut off the main water valve to Zhao Lan’s apartment, creating a false plumbing problem. Pretending to be a property management worker, he knocked on her door, claiming he was there to fix the issue. Once inside, however, he revealed a knife he had brought with him and attempted to assault her.

Faced with the sudden threat, Zhao Lan fought back fiercely and warned Zhang that she would call the police. This enraged him, and losing all self-control, he stabbed her five times, causing her to collapse and die on the spot. The case shocked the public, and Zhang Shuai was eventually sentenced to death for the heinous crime of intentional homicide.

This tragedy serves as a grim reminder of the importance of safety for those living alone in cities. It is crucial to protect one’s privacy, such as by keeping curtains drawn and avoiding prolonged exposure of one’s living environment. Be extremely cautious about opening the door to strangers, even if they claim to be from property management, delivery services, or maintenance—always verify their identity through a peephole or video intercom first. Additionally, keep doors securely locked, especially at night, and have emergency contacts and self-defense tools readily available. Maintaining a constant sense of vigilance can help safeguard one’s life before danger strikes.