Song Ranran

Biodata

Personality

Song Ranran is outspoken, quick-witted, and informal with her colleagues. She frequently scolds Wang Yu for speaking without thinking and makes sarcastic comments even during tense interviews. Her irritation with Zhou Yang’s arrogance becomes open anger when he insults Pei Qingyu 2 46 47 49.

She is deeply attached to her captain. Remembering Pei Qingyu’s shooting brings her close to tears, while his return to work lifts her mood despite a new murder case. Her protectiveness can compromise her composure: after learning that Song Sheng has hurt him, she makes an agitated remark about teaching the suspect a lesson, prompting a warning from Xun Yin 1 28.

She is also sensitive to Xun Yin’s distress. She takes over a company visit so he can answer a hospital call, criticizes Wang Yu for increasing his anxiety, and avoids pressing him when he cannot say whether Pei Qingyu will survive surgery 8 16 44.

Abilities & Skills

Computer Investigation

• Recruited specifically for her IT skills; works primarily at a desk but joins field assignments when needed 9.
• Discovers a hidden tracking program in Lin Zhou’s work files and establishes that it was created approximately six months earlier 9.
• Monitors the tracker’s movements and relays changes to the pursuing officers 9 10.
• Limitation: Lin Zhou’s security prevents her from freely manipulating his program. The suspect’s tracking signal later disappears during the shipping-container pursuit 9 13.

Surveillance Access and Technical Support

• Identifies signal jamming as the likely reason for losing contact with Pei Qingyu and Xun Yin after confirming that their earpieces are functioning 36.
• Gains control of the underground bar’s surveillance cameras and reports Pei Qingyu’s deteriorating condition to Pei Qingyan 38.
• Searches the interrogation room, hospital, and two suspects for listening devices, finding one on each woman 44.

Investigative Research and Interviewing

• Compiles victim-background reports covering family, employment, social connections, and habits 4.
• Questions restaurant owners and compares their accounts with Lin Zhou’s spending, identifying a discrepancy between ordinary meal prices and his expenses 5 6.
• Challenges a murder confession that lacks supporting details and is assigned to obtain both sisters’ medical records after a suspicious transfusion reaction 27 28.
• Investigates Zhu Qi’s background at Pei Qingyu’s request and completes the information search by the following chapter 49 50.

Field Observation

• Assigned as Wang Yu’s sniper spotter during the riverside pursuit 12.
• Reports from a rooftop roughly four hundred meters northwest of the river, describing the suspect’s route through the shipping containers 12.
• Distinguishes observed movement from uncertain positioning, warning that the team cannot currently lock onto the suspect 12.

Equipment / Items

• Portable computer — Used for tracking support and background research. She drops it in shock upon encountering Pei Qingyu and Xun Yin in an intimate-looking moment, then asks to have it reimbursed 13 49 50.
• Mobile phone — Used for case communication and messaging Lin Shichu while they sit together in a hospital ward 9 27 28.
• Earpiece — Connects her with field personnel during surveillance and rescue operations 12 38.

Relationships

• Pei Qingyu — Her captain, whom she admires and worries about intensely. She helps with his move into Xun Yin’s home and discourages him from helping carry things while recovering 1 17.
• Xun Yin — Her deputy captain, addressed familiarly as “Brother Xun.” She supports his care for Pei Qingyu and discusses gradual romantic development with him; he also reins in her comments during investigations 8 28 31 49.
• Wang Yu — A frequent field partner and target of her exasperated scolding. They investigate Lin Zhou’s company together and later work as spotter and sniper during the riverside operation 2 8 12 16.
• Lin Shichu — A regular investigative partner, addressed as “Brother Lin.” His habit of correcting her posture reminds her of her mother; they also exchange messages while sitting almost shoulder to shoulder 5 6 15 27.
• Pei Qingyan — Receives her technical support during the underground-bar emergency. Her surveillance report alerts him to the seriousness of Pei Qingyu’s condition 36 38.
• Zhou Yang — His contemptuous behavior immediately antagonizes her. She objects to his insults and later comments sarcastically on his conduct during questioning 46 47 49.

Story Role / Major Arcs

Lin Zhou’s Murder

• Victim profiling: Song Ranran establishes that Lin Zhou has few close relationships and a strong interest in eating. Restaurant interviews reveal a weekday-based visiting pattern in an area far from both his home and workplace 4 5 6.
• Financial discrepancy: She supplies his financial information and confirms that the modest restaurants he visits cannot explain his spending 6.
• Tracking breakthrough: Her discovery of the hidden program provides a moving lead after Shi Qian’s arrest. She follows its signal toward Lin Zhou’s company and supports the subsequent pursuit to the river 9 10 12.
• Unidentified suspect: Following Zhuo Wumian’s escape, she reports that his DNA has no database match or associated criminal record 15 16.

The Sisters’ Identity-Switch Case

• Family identification: She verifies that the murdered homeowners have two daughters, exposing a mismatch in the apparent victim identities 20.
• Questioning the confession: With Lin Shichu, she watches the hospitalized woman presented as Song Xiao and repeatedly seeks details behind her sudden confession. The patient is later revealed to be the elder sister, Song Sheng 27 28 29.
• Medical evidence: After the patient suffers a hemolytic reaction, Pei Qingyu orders Song Ranran to obtain both sisters’ medical records 28.
• Underground-bar support: She gains access to the bar’s cameras after communications fail, allowing the outside team to monitor the trapped officers 36 38.
• Listening-device investigation: She finds bugs on both sisters and obtains Song Sheng’s identification of Zhuo Wumian as their supplier. Xun Yin directs her to close the murder case once the recovered syringes arrive and file the Zhuo-related evidence separately with the earlier cases 44.

Zhou Fu’s Death and the Zhu Qi Lead

• Case research: Song Ranran reviews the backgrounds and extensive holdings of Zhou Fu and Zhang Bu, victims recovered from the underground bar 44 46.
• Zhu Qi inquiry: After Zhou Yang’s account leads to a photograph of Zhu Qi, she immediately begins investigating him and returns with the information 49 50.
• Romantic misunderstanding: On returning, she drops her computer at the sight of Pei Qingyu and Xun Yin together. Assuming they want privacy, she offers to keep watch and divert Lin Shichu 50.

Trivia

• During a quiet period between major cases, she goes on several rounds of blind dates 17.
• Her novel-inspired advice that relationships should develop gradually influences Xun Yin’s approach to his feelings for Pei Qingyu 31.