Double Helix (Chinese Series)

Ella Perez November 5, 2026

At its best, this 12-episode series is a tender first-love story. At its most difficult, it becomes an exhausting cycle of separation, reunion and escalating obsession. Spanning roughly 10 to 12 years of story time, it follows Lu Feng, a wealthy heir, and Xiao Chen, a warm-hearted top student, through friendship, romance, estrangement and, eventually, a return to love.

The early stretch is the show’s sweetest. Lu Feng falls for his classmate, and Xiao Chen, hesitant at first, eventually agrees to a relationship that feels genuinely happy. The actor playing Lu Feng makes his awkwardness and first-love naivety convincing, while Xiao Chen’s innocence is equally endearing. Their lives are pulled apart by forces around them: Lu Feng’s father sends him to the US to keep him away from Xiao Chen, and Xiao Chen has to change schools. Years later, Xiao Chen discovers that his new boss is Lu Feng. Time has made Lu Feng bitter, but their misunderstandings are eventually resolved and they reconcile.

That reunion does not hold. When Xiao Chen’s mother learns about them, her reaction is so severe that she suffers a heart attack. Around the same time, an accident connected to Lu Feng seriously injures Xiao Chen’s younger brother, driving the couple further apart. Before she dies, Xiao Chen’s mother pressures him to marry a woman who has feelings for him. Lu Feng is devastated when he learns of the marriage and buries himself in work. Five years later, Xiao Chen is divorced; his wife had always understood that his heart was elsewhere. He seeks Lu Feng out, now a highly successful businessman, but Lu Feng’s accumulated resentment turns dangerous: he effectively confines Xiao Chen at home and repeatedly forces himself on him. Xiao Chen’s brother eventually finds him and gets him out.

From there, Lu Feng’s insecurities spiral toward a mental health crisis, and he is hospitalized. Xiao Chen remains at his side. After nearly a decade of breaking apart and finding one another again, they ultimately reunite for good. A secondary gay relationship between Xiao Chen’s brother and his love interest appears intermittently alongside the main story, though it never takes center stage.

The show’s most substantial character development belongs to Lu Feng. He moves from loving and wounded to possessive, then obsessive and increasingly calculating, with years of abuse by his father and repeated heartbreak shaping the person he becomes. Xiao Chen, by contrast, is often written into a damsel-in-distress role. He is grieving his parents and dealing with heartbreak, yet rarely stands up to anyone; Lu Feng, his brother and his mother all push him around. The repeated breakups and reconciliations remain compelling in their changing details, but eventually become tiring.

I also found the explanation offered in the final two or three episodes unsatisfying: the series attributes Lu Feng’s obsessive behavior to bipolar disorder. Another explanation might have worked better, particularly because his treatment is portrayed as though recovery were straightforward. His history helps make sense of his wounds, but I did not find the diagnosis convincing.

The story feels dated and may have landed harder five years ago, though I still enjoyed it. It is not a great show, but it delivers the intense, toxic energy of old-school BL. Much of that comes from the actor playing Lu Feng, who gives emotional weight to the shift from soft, loving high schooler to deeply obsessive corporate CEO and holds the series together even when the plot goes to extremes. (7/10)

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