
Lyu Sitong
BIOGRAPHY
Lyu Sitong (Chinese: 吕思瞳) is a Chinese actor who plays Cheng Yichen opposite Ayden Sng’s Lu Feng in Double Helix (2026), a Mandarin-language boys’ love (BL) drama adapted from Lan Lin’s danmei novel A Round Trip to Love.
He is a graduate of the Beijing Film Academy, where he studied performance. Public biographical details beyond his education and acting credits, including his exact birth date, hometown, and talent agency, have not been confirmed through an official or independently verifiable source and are intentionally left blank on this profile rather than estimated.
BLGLFlix editorial view
A structured record does offer his birthday. This page does not print it, and the reason is a rule this site applies specifically to mainland Chinese performers. Personal data for actors working in China circulates through aggregation with very little verification behind it, and a database field on its own is not enough to publish a private detail about someone who has not published it themselves. The same field would be accepted for a Thai or Japanese performer where an agency page or a broadcaster profile corroborates it. Here nothing does, so it stays off.
The same reasoning removed a social handle. The record lists an Instagram account, but Instagram is not accessible from mainland China and an actor working there maintains an official presence on Weibo instead. A handle on a platform his audience cannot reach is not evidence of an official account, and it is not reproduced.
His training sets him apart from most of this catalogue. The Beijing Film Academy is a conservatory with a competitive entrance examination, and a graduate of it has spent four years learning the craft formally. Almost everyone else recorded here arrived through an agency trainee scheme, a survival show, a modelling contract or a beauty pageant. Chinese danmei productions draw on a talent pool that was trained rather than scouted, and that difference is visible long before anyone reaches a screen.
PROFILE DETAILS
- Native Name
- 吕思瞳
- Real Name
- Lyu Sitong (吕思瞳)
- Nickname
- Elio
- Pronouns
- he/him
- Gender
- Male
- Profession
- Nationality



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