The Beijing Love Triangle: A Time-Travelled Reunion

In the year 2147, Beijing lies in ruins, a city shrouded in the aftermath of a global catastrophe. Amidst the chaos, a young woman named Yifei leads a modest life, working as a librarian in the remnants of the old city library. Her days are filled with the quiet comfort of books and the company of her best friend, Ming, who is as much a part of her life as the city itself.

One rainy evening, as Yifei is closing the library, a mysterious figure named Wei enters, drenched and disheveled. He claims to be a time-traveler from the 1930s, a time when Beijing was still vibrant and full of life. Wei tells Yifei of a love triangle that occurred between him, his childhood friend, and a woman named Xiaoyu, who mysteriously vanished during a tragic event.

Yifei is skeptical but intrigued by Wei's story. As the days pass, Wei reveals more about the past, including the fact that Xiaoyu was Yifei's great-grandmother. The revelation stirs a deep curiosity within Yifei, who begins to delve into her family's history, hoping to uncover the truth behind Xiaoyu's disappearance.

Ming, who has always been supportive of Yifei's pursuits, joins her on this journey. Together, they navigate through the labyrinth of time, uncovering clues that lead them to a hidden underground city beneath the ruins of Beijing. There, they find a time capsule containing Xiaoyu's diary, revealing the intricate details of the love triangle.

The diary tells of Wei's love for Xiaoyu, who was betrothed to another man, a nobleman named Zhen. Despite their love, Xiaoyu was torn between her loyalty to her family and her feelings for Wei. In a twist of fate, Zhen was killed in a political uprising, leaving Xiaoyu a widow. Devastated by her loss, Xiaoyu vanished, leaving behind a city and a love that would never be.

As Yifei and Ming piece together the puzzle, they realize that Xiaoyu's disappearance is not as simple as it seemed. It was a calculated move to protect her family from the dangers of the time. The diary also reveals that Wei had a secret: he was a spy working for the resistance, and his love for Xiaoyu was a cover for his true mission.

The revelation of Wei's true identity and the past love triangle shatters Yifei's perception of her great-grandmother. She struggles with the idea that Xiaoyu's actions were motivated by selflessness and duty rather than love. Ming, on the other hand, is torn between his loyalty to Yifei and his admiration for Xiaoyu's courage.

The time-traveler Wei, who has become a close friend to Yifei and Ming, offers to take them back to the past to see Xiaoyu's life firsthand. They agree, and as they step into the time machine, they are transported to the 1930s.

In the past, Yifei and Ming witness the love triangle unfold, seeing the complexities and sacrifices made by each character. They see Xiaoyu's bravery in facing her own fears and the pain of losing Wei. They also see the love that Wei had for Xiaoyu, a love that was never meant to be.

Returning to the present, Yifei and Ming are changed by their experience. They come to appreciate the complexities of love and the sacrifices made for the greater good. Yifei realizes that her great-grandmother's actions were not a betrayal of love but a testament to it.

The story concludes with Yifei and Ming returning to the library, where they find Wei waiting for them. Wei reveals that he has been watching over them, ensuring their safety throughout their journey. He thanks them for helping him understand the past and honors their courage in facing the truth.

As they part ways, Yifei and Ming look at each other with a newfound understanding. They have not only uncovered the truth about Xiaoyu's past but have also learned about love, sacrifice, and the power of friendship. The Beijing Love Triangle has left an indelible mark on their lives, forever altering their perspectives on love and history.