17 Minutes Against Mu Xiaokui and Vocals by Jane Zhang: Phantom Blade Zero Showcases Chapter 3 Boss and Theme Song Heart Lake

Following its full release on PlayStation 5 and PC, Beijing-based developer S-GAME has released an extended 17-minute official showcase highlighting one of the defining encounters in Phantom Blade Zero. The footage dives straight into Chapter 3 for an unedited look at the multi-phase boss battle against Mu Xiaokui, before transitioning into the game's official theme song, Heart Lake, performed by renowned Chinese vocalist Jane Zhang.
Mu Xiaokui: A Multi-Phase Wuxia Gauntlet in Chapter 3
A pivotal figure in the franchise's lore and the Young Mistress of the Order, Mu Xiaokui confronts Soul in the Village of Lu region during the third chapter of the campaign. The 17-minute gameplay demonstration highlights the shifting rhythm of the encounter, which opens as a blistering one-on-one duel. Relying on acrobatic aerial dives, rapid blade combos, and deceptive spacing, Mu Xiaokui punishes mistimed inputs from the opening seconds.
As her health bars deplete, the stakes escalate dramatically. Subsequent phases introduce aggressive guard-breaking strikes telegraphed by red flashes, high-damage grab animations, and the direct intervention of her loyal guardians, Iron Fiend and Jade Dancer. Managing stamina and crowd control becomes essential once the arena turns into a multi-opponent brawl. If you want to consistently counter her unblockable flurries without draining your posture gauge, check out our complete Phantom Blade Zero guide to mastering Sha-Chi parries and Ghoststep dodges before stepping into her arena.
Heart Lake: Caisheng Bo and Jane Zhang Shape the Kungfupunk Soundscape
Once the dust settles on the battlefield, the showcase flows directly into the full music video for Heart Lake, the official vocal theme song of Phantom Blade Zero. Composed under the musical direction of Caisheng Bo, the soundtrack blends traditional Chinese instrumentation, including the erhu and pipa, with modern cinematic arrangements tailored to director Soulframe Liang's signature "kungfupunk" aesthetic.
To bring the track to life, S-GAME collaborated with celebrated Chinese singer Jane Zhang. Her soaring vocal performance underscores the emotional aftermath of Chapter 3, reflecting the tragic weight carried by protagonist Soul as he races against his 66-day curse across the dark martial world of Wulin. Both the boss encounter and the full musical sequence are available to experience right now in the retail version on PS5 and Steam.
My Take
What stands out to me most in this 17-minute showcase is how seamlessly S-GAME bridges mechanical intensity and narrative melancholy. From a combat standpoint, Mu Xiaokui is a masterclass in pacing: transitioning from a razor-sharp duel into a chaotic clash alongside Iron Fiend and Jade Dancer forces you to break the habit of parrying everything on sight and rely on disciplined Ghoststep positioning instead.
Yet it is the transition into Heart Lake that truly elevates Chapter 3. Where many action RPGs immediately cut to a loot screen after a grueling boss gauntlet, letting Jane Zhang's vocals unfold over Caisheng Bo's traditional strings turns the aftermath into a haunting wuxia elegy that lingers long after you sheathe your blade.

















