Li Tianchen

is the central antagonist in the Link Click donghua series. He serves as the main antagonist of both seasons, but his true identity was not revealed until Season 2. He worked with Qian Jin and had been disguised as his sister. They are responsible for multiple homicides, the death of Emma (while possessing her body), and the stabbing of Lu Guang (while possessing Qiao Ling's body).
== Appearance ==
Li Tianchen is a slim young man of average height, he has short pink hair and pink eyes. His outfit consists of a lilac blue jacket that has yellow, pink, and white accents, on top of a yellow hoodie that has pink and blue accents. He wears white shorts, long white socks, and lilac blue and pink shoes. 
When disguised as Li Tianxi, he wears a mask and a wig in order to hide his true identity. He also wears a pink hoodie, pink shirt, and pink shoes. 
== Story ==
=== Childhood ===
Li Tianchen and his sister's childhoods were marred by frequent domestic disputes driven by their father's unfounded accusations of their mother's infidelity, often escalating into violent abuse. Their next-door neighbour was partly responsible, as he had often spread gossip about their parents, aggravating the situation and earning him Li Tianchen's despisal. During his childhood, he also met Liu Xiao, who he became friends with and was inspired by to be brave and stand up for himself.
During one such violent domestic dispute at some point in his childhood, Li Tianchen could not bear watching her mother endure continued beatings while feeling powerless to resist. Taking matters into his own hands, he used his special ability in conjunction with his sisters' to take remote control of her mother and fight back against his father. With the strike of a hammer, he landed a fatal blow on his father. Just as he thought that they were finally free of their father's abuse, he realized that her mother had simultaneously suffered a knife wound. As a result, both of his parents died in this incident, leaving Li Tianchen and her sister alone. Qian Jin, a police officer at the time, was assigned to their case, marking the beginning of their relationship.
=== Present ===
Following his involvement in Li Tianchen's case, Qian Jin left his position as a police officer, taking with him the police's records on the siblings. He later became a lawyer for Liu Jing's family. At some point, Liu Jing's son, Liu Min, approached Qian Jin with a request to "permanently silence" Internet trolls who attacked him. While Qian Jin was unable to carry out the task himself, he had brought along Li Tianchen and asked if he was willing. Incidentally, Liu Min's first target was none other than Li Tianchen's neighbour, which led him to accept the deal, partnering with Qian Jin and starting a series of homicides on behalf of Liu Min using his and his sister's combined ability to remote control people through their photos.
The serial homicides caught the attention of the police. Put in charge of the case, Xiao Li requested Cheng Xiaoshi and Lu Guang's help on the matter after witnessing them solve the case of Li Doudou's kidnapping using their powers. While investigating the case, they inadvertently drew the attention of Li Tianchen towards Xu Shanshan, leading him to attack her in her apartment while possessing Liu Min. Through Cheng Xiaoshi and Lu Guang's combined efforts, they managed to prevent the attack by traveling back in time and lure "Liu Min" to Time Photo Studio for a confrontation, leading to Liu Min's arrest. Despite this, they were still unaware of the true culprit, and had unknowingly given Li Tianchen the opportunity to learn the true nature of Cheng Xiaoshi's power.
In a vengeful act, Li Tianchen possessed Qiao Ling and stabbed Lu Guang while Cheng Xiaoshi is visiting the past in an attempt to save Emma. Around the same time, to avoid being implicated, he also possessed Liu Min and strangled him with his own handcuffs, leading to his death after failed rescue attempts. Upon hearing news of Liu Min's death, Liu Jing ordered Qian Jin to retrieve his son's phone. Consequently, Chen Bin, who held the phone at the time, became victim of the twins' remote control. While visitng Lu Guang at the hospital, the possessed Chen Bin was taken to the rooftops of the hospital, where Qian Jin's accomplice Xiao Ma awaited to take the phone. Li Tianchen had planned to then murder Chen Bin by having him jump off the building, but to his surprise, he lost control over Chen Bin, as his memories and emotions overwhelmed Li Tianxi, who then broke free from her brother's control and fled.
When fleeing, Li Tianxi ran into Liu Siwen's group, dropping her purse, a hairpin, and a photo taken with her mother many years ago. Li Tianchen, chasing after her, was stopped in his tracks by Ouyang's father, who handed him the items Tianxi dropped. Flipping the photo, Li Tianchen saw on the back side a drawing of himself with her sister, and the words "can't live without a good brother." Recalling their childhood, Li Tianchen ran towards Lu Guang's hospital room, arriving just in time before Lu Guang shut his door. He handed the photo to Lu Guang, in hopes that he and Cheng Xiaoshi would enter the photo and help him change the tragic events of his past. He then waited in the hospital stairwell for Xiao Ma to take Liu Min's phone from him. While Xiao Ma mistakenly assumed he had done so on Qian Jin's orders, it was later revealed that Li Tianchen was instead fulfilling his childhood friend Liu Xiao's request.
Afterwards, Li Tianchen proposed a bold plan to Qian Jin: To disguise himself as his sister and enter the police station posing as a witness, in order to lure out Cheng Xiaoshi and kidnap him using his ability to control by touch. Although his plan had initially gone smoothly, with him successfully shaking off the the police's pursuit and taking Cheng Xiaoshi to a boat, Lu Guang had also anticipated their plot: He took a photo on his phone before Cheng Xiaoshi was taken, allowing Cheng Xiaoshi to return to the past as Lu Guang and save himself. While Cheng Xiaoshi was able to enter the photo and intercept his past self, in an attempt to stop who he thought was Li Tianxi from escaping, he made physical contact with Li Tianchen, allowing Lu Guang to be controlled and taken away in his place..
Having failed to secure Cheng Xiaoshi, Li Tianchen and Qian Jin soon devised another plan: They demanded a hostage exchange to be made in the next 35 minutes, trading Lu Guang for Cheng Xiaoshi. While Cheng Xiaoshi was able to escape the exchange with creative use of his ability, this was anticipated by Qian Jin. Cheng Xiaoshi, along with Li Tianxi, who was brought along for her telepathic ability, were captured by Xiao Ma who was stationed nearby on Qian Jin's orders.
Xiao Ma brought them down to some underground tunnels to meet Qian Jin and Li Tianchen. While Li Tianchen was shocked to see his sister there, Qian Jin, who was greatly displeased by her betrayal, aimed his pistol intending to harm Li Tianxi, but was stopped by Li Tianchen and Cheng Xiaoshi. Cheng Xiaoshi then proceeded to question the group who it was that delivered the photo to Lu Guang's ward that night. Despite his attempts, Li Tianchen was unable to conceal the fact that he was the one to take Liu Min's phone any longer. Xiao Ma, initially puzzled why Qian Jin had not exposed him sooner, then deduced that Qian Jin had known all along. This prompted Qian Jin to shoot Xiao Ma in the chest, as he had known too much to be kept around. An infuriated Qian Jin demanded an explanation from Li Tianchen for his betrayal, to which Tianchen calmly responded that their relationship had always been rooted in mutual use, devoid of any trust. According to him, there couldn't be betrayal without trust in the first place. Qian Jin then argued that he had indeed placed trust in Li Tianchen, having raised the siblings as his own children. Cheng Xiaoshi interjected, countering that Qian Jin had merely treated them as tools and emotional substitutes.
Growing increasingly agitated, Qian Jin argued that he was not the one in the wrong. Reminded of his original reason for capturing Cheng Xiaoshi, he handed Cheng Xiaoshi a photo of his wife, blaming her for his misfortunes and demanding that Cheng Xiaoshi alters his past using the photo, leading Cheng Xiaoshi to deduce that Qian Jin had been one responsible for the death of his wife. Well aware of Qian Jin's past, Li Tianchen followed by stating that Zhuang Shuai, whom Qian Jin thought his wife was having an affair with, was actually innocent. He then reveals that he was sure of this because he can access the memories of those he controls, and that Zhuang Shuai was the first person that Qian Jin ordered him to kill after discovering his special ability. Qian Jin, still unable to admit that he was wrong, continues to condemn his victims, claiming that they deserved to die.
Unbeknownst to Qian Jin, the shot he previously landed on Xiao Ma was not fatal. The enraged Xiao Ma got up from the ground and tackled Qian Jin, disarming him and chasing him further down the tunnels, while also alerting Lu Guang, Qiao Ling and Xiao Li to their location with his gunshots. Meanwhile, Li Tianchen seized the opportunity to attack Cheng Xiaoshi. Li Tianxi attempted to intervene, however to no avail as Li Tianchen expressed his disappointment in the fact that Cheng Xiaoshi and Lu Guang did not take action to change their tragic past, and declared that he was going to change their fate himself. At this moment, Lu Guang had arrived at the scene with Qiao Ling, but was quickly tased and restrained by Li Tianchen.
As Li Tianchen pressed on Lu Guang's stab wound and threatened Cheng Xiaoshi, his mute sister, who could bear the situation no longer, called out to her brother and spoke out the words "brother, I want to go home" accompanied by sign language, with tears flowing down her face. Jolted form the conflict, Li Tianchen recalled teaching the phrase to her sister while they were young, and broke into tears himself. However, she was then suddenly shot from behind by Qian Jin, who had managed to subdue Xiao Ma, and fell to the ground. While Lu Guang and Cheng Xiaoshi engaged Qian Jin, Li Tianxi slowly muttered to her brother, "I am scared... I miss mother..." Officer Xiao then arrived on the scene, and Li Tianxi urged her brother to flee for safety. Left with no allies, Li Tianchen heeded her sister's words and fled in tears.
Some time later, Li Tianchen was seen sitting at the park where he first met Liu Xiao, staring at an old photo of him and his now-late sister on his phone as he awaited his childhood friend Liu Xiao, who had just returned from abroad. Upon Liu Xiao's arrival, Li Tianchen handed him Liu Min's phone. Liu Xiao offered to let Tianchen help in his plan. Left with no choice, he agreed, leaving his phone and past life behind.
== Personality ==
As a child, he was brash and abrasive but had a caring side that was evident in how protective he was of his sister, Li Tianxi. He had a strong sense of justice and disliked people who pretended to be kind, such as their next-door neighbour. 
In the present, although he still held her sister close, he had turned cruel, deranged, and pessimistic about his future. He committed many homicides using his special ability while partnered with Qian Jin. After discovering Cheng Xiaoshi's ability to visit the past through photos, he tried to seek help from him to change their tragic past. However, much to his disappointment, Cheng Xiaoshi and Lu Guang opted not to act. His goal then became to capture Cheng Xiaoshi and use his ability to change the past himself.
== Abilities ==
=== Control By Touch ===
By touching one or more people, he is able to put them in an immediate state of trance. Said person will follow orders given from him. The trance can be broken if the victim is separated from him. By controlling other ability users, he may indirectly use their powers.
=== Remote Control ===
Li Tianxi, his twin sister, has the ability to possess others by using a photo of them. When doing so, she can see what they are seeing in the present and gains access to their memories.
Li Tianchen's ability can be used in tandem with her sister's. By using a photo of someone, while holding his sisters hand, he can use her power to indirectly control others. He may possess them in the present remotely. Like Cheng Xiaoshi, he retains the physical abilities of his original body, and is able to move even when the host is paralyzed, as he did with Liu Min.
== Relationships ==
=== Li Tianxi ===
Li Tianxi is his twin sister. Growing up, Tianchen always felt the need to protect Tianxi from danger, with whom he shared a close bond. He would reprimand their neighbor when he touches her and shield her from his father's abuse. He had also learned sign language in order to teach her how to communicate.
=== Qian Jin ===
After the death of the siblings' parents, Qian Jin left his position as a police officer and raised Li Tianchen and Li Tianxi. However, Qian Jin's intentions were far from pure: When the siblings grew older, he started using them as tools to remotely commit homicides with their special abilities, including the murder of Zhuang Shuai, and a series of homicides on behalf of Liu Min.
=== Liu Xiao ===
Li Tianchen and Liu Xiao met as children at a park. Xiao helped Tianchen get his ball from the fountain, and inspired him to be brave and stand up for himself. He later takes this advice and tries to stop his father from hitting his mother. They meet up in the same park years later, where Tianchen gives him Liu Min's phone. Xiao offers to let Tianchen help in his plan, and he agrees, leaving his phone and past life behind. Tianchen seems to think highly of him, since he takes Xiao's advice and leaves with him.
== Episode Appearances ==
 
== References ==
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