After rewatching "The Lonely Warrior," I would like to discuss some key details of the movie.

1. The film begins at a crime scene where Cheng Bing deduces the suspect to be from Sichuan based on the technique of entering the room through the air conditioning unit. During that specific era, different criminal gangs had distinct methods of breaking into homes: Guizhou people were skilled at picking locks, Henan people preferred sneaking through doors, and Sichuan people climbed air conditioning units.

2. During the scene where the suspect Wang Da Yong is apprehended, he acts nonchalant and denies any involvement. However, when he sees Cheng Bing's daughter's photo and displays an evil smile, that "smile" becomes the trigger for The Lonely Warrior's mistakes and the abyss for countless girls.

3. In one of Wang Da Yong's former residences, Cheng Bing discovers a terrifying girl's face behind a mirror. This reflects Wang Da Yong's disturbed mentality and desires, indicating the possibility of other underage victims. The face behind the mirror resembles the expression of a victim's scream.

4. Upon arriving at the crime scene and witnessing the brutal murder of a 14-year-old girl, a small gesture by Cheng Bing covers the girl's body with a skirt. This act demonstrates a sense of justice and respect for the deceased female. Additionally, as a father, Cheng Bing may have thought of his own 10-year-old daughter at that moment.

5. At the beginning, Cheng Bing's daughter anonymously requests the song "The Fearless Youth." Though it is uncertain whether his daughter made the request, it is later revealed that she contacted him and added her name as "Xiao Yu Dian" when he went to pursue the culprit in Tongren, Guizhou. This aligns with the song choice at the beginning.

6. The movie contains several rainy scenes, symbolizing the turbulent destinies of the characters and resonating with Cheng Bing's daughter's name, "Xiao Yu Dian," meaning "Little Raindrop." It also echoes the lyrics of the song "Through Wind and Rain, Through the Seasons."

7. Cheng Bing's daughter's attitude towards him changes throughout the movie. Initially, she sticks her photo on his phone, but later she tears it apart, revealing her dissatisfaction or even resentment. However, when she adds him on WeChat and says, "Come home safely," it signifies that family bonds never truly break apart.

8. Cheng Bing initially disagrees with installing security windows at home, but upon his release from prison, he finds that they have been installed.

9. One surprise in the movie is the appearance of two familiar actresses, Gao Ye and Xu Dongdong, playing the roles of the two wives.

10. At least five actors from the movie "Furious Speed" also appear in "The Lonely Warrior": Zhang Yi as Cheng Bing, Wang Xiao as Ma Zhenkun, Gao Ye as Ma Zhenkun's wife, Feng Bing as Lao Mo, and Ning Xiaozhi as Director Guo.

11. When Cheng Bing points out the murderer in front of the glass, he doesn't see Wang Da Yong; he only sees his own reflection. This implies that Cheng Bing feels indirectly responsible for the death of his colleague, A Zhe. A Zhe's wife says, "If it weren't for you, he wouldn't be like this," which is a mixture of gratitude for A Zhe's sacrifice but leaves Cheng Bing with mixed emotions.

12. Cheng Bing was previously a captain but later worked as a water deliveryman. He possesses a stack of water coupons, indicating his outstanding performance. Wherever he goes, he remains a remarkable individual.

13. Previously, Cheng Bing always had a straight posture, but after his release from prison, he becomes cautious and hunches over. His several years in prison have greatly changed him, even in his interactions with his ex-wife and daughter.

14. In the end, when Cheng Bing goes to deliver water, he visits the restroom. This is due to a detail mentioned to him by a woman earlier: Wang Da Yong has a habit of playing a Tetris game console in the restroom. Cheng Bing also discovers an old-fashioned game console behind the restroom mirror.

15. Finally, Wang Da Yong is apprehended on the spot and brought to justice. Cheng Bing asks, "Can he be convicted without a confession?" The response is that nowadays, as long as the evidence chain is complete, a conviction can be made even without a confession. The fate of The Lonely Warrior is also changed at the beginning due to a "confession." If it happened in the present, The Lonely Warrior would not have ended in the same way. Technological advancements have become the turning point in The Lonely Warrior's life, and in an era of great transformation, everyone is merely a speck of dust.

Please note that the translation providedis based on the original Chinese text and may not capture all the nuances and details accurately. However, these key points should give you a deeper understanding of "The Lonely Warrior" after revisiting the movie.