Lyu Sitong official photo - Chinese actor, star of Double Helix

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

FILMOGRAPHY — TV SERIES (1)

EDUCATION

  • Beijing Film Academy (BFA), Beijing, performance studies.

FREQUENTLY ASKED QUESTIONS

Who is Lyu Sitong?

Lyu Sitong (吕思瞳), also known by the stage name Elio, is a Chinese actor who graduated from the Beijing Film Academy. He plays Cheng Yichen in the 2026 BL drama Double Helix.

What role does Lyu Sitong play in Double Helix?

He plays Cheng Yichen, a gentle former top student who reunites years later with his high-school sweetheart Lu Feng, played by Ayden Sng.

What is Lyu Sitong's birth date?

His exact birth date has not been confirmed through an official or independently verifiable source, so it is intentionally left blank on this profile.

Where did Lyu Sitong study acting?

He is a graduate of the Beijing Film Academy (BFA), one of China’s leading film schools, confirmed by both his TMDB biography and Chinese entertainment press coverage of a campus visit.

Biographical details and any photograph on this page come from TMDB and the sources named in our editorial notes. This product uses the TMDB API but is not endorsed or certified by TMDB. BLGLFLIX is an independent reference site with no affiliation to the person profiled or their agency, and does not publish speculation about anyone’s private life. Full copyright, correction and takedown policy: Disclaimer.

Sources

3 sources

Every factual claim on this page is taken from the records below. Where two sources disagree, the disagreement is stated in the text rather than resolved silently.

  1. TMDBTMDB person record themoviedb.org/person/6084077
  2. SINASina Entertainment, 吕思瞳回北电 (campus visit confirming BFA education) sina.cn/news/detail/5315249140140051.html
  3. WikipediaEnglish Wikipedia, Double Helix (2026 TV series) en.wikipedia.org/wiki/Double_Helix_(2026_TV_series)

This product uses the TMDB API but is not endorsed or certified by TMDB.

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