Mok Fei-foon is an undercover police officer. Hui Leuk-to leads a business group tied to Hong Kong's criminal underworld. They grow close while each conceals who he really is, and a counterfeiting operation and a war between rival groups push both of them into danger.

How many episodes are there and when do they air?

Nine episodes on Youku, weekly from 14 August 2026 to 2 October 2026. The first two went out together.

Is this the same series as Smoke & Ash?

Yes. Some databases list it under Smoke & Ash. The English title used by the production and by Wikipedia is Ash; the Chinese title is 煙灰.

What language is it in?

Cantonese. It was filmed in Hong Kong with a predominantly local production team.

Is it based on a novel?

Yes, on the novel 煙灰 by the Chinese writer Feng Nong.

Where can I watch it?

It streams on Youku. No direct link to a licensed platform outside the Youku ecosystem could be verified, so none is listed here.

What does the rating on this page mean?

No classification body has rated this series and TMDB carries no certification for it. 16+ here is an editorial classification reflecting the organised-crime violence, not a certificate.

Why do character names differ from other sites?

The series is performed in Cantonese. This page uses the Cantonese romanisations given by the English Wikipedia article rather than the Mandarin readings recorded on TMDB.

Ash

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SYNOPSIS

Ash (煙灰) is a Hong Kong Boys' Love series made in Cantonese for Youku, adapted from the novel by Feng Nong. Wikipedia describes it as filmed entirely in Hong Kong with a predominantly local crew, which is unusual for a BL production carried by a mainland platform.

Mok Fei-foon (Kingston Yi Xuan) is a police officer working undercover. Hui Leuk-to (Leo Peng Ziye) runs a business group tied to the city's criminal underworld. Both men are concealing what they actually are, from everyone including each other, and the closer they get the more expensive the lie becomes.

A counterfeiting operation and a war between rival groups keep tightening around them. Nine episodes, directed by Brando.

CONTENT DETAILS

Native Title: 煙灰
Original Title: Ash
Also Known As: Smoke & Ash, Yan Hui, Yin Fui
Adaptation: Adapted from the novel 煙灰 by the Chinese writer Feng Nong, who also wrote the novels behind General and I and Golden Jade Dynasty. The publisher and serialisation dates could not be verified from an official source, so they are not recorded here.
Genres: Action Crime Drama Enemies-to-Lovers Forbidden Love Hidden Identity Mafia Romance Suspense Thriller
Themes: BL
Key Themes: Undercover PoliceOrganised CrimeHidden IdentityMutual DeceptionCounterfeiting RingLoyalty and BetrayalForbidden LoveCantonese ProductionNovel AdaptationFamily EmpireTrustDanger
Country: Hong Kong
Language: Cantonese
Director: Brando
Original Author: Feng Nong
Networks: Youku
Seasons: 1
Episodes: 4 / 9
Duration: 45 min
Aired Start: 14 Aug 2026
Aired End: 02 Oct 2026
Release Year: 2026
Content Rating: 16+
Production Co: Tongmeng International