"Xingneng Xuanguang" FLAME Device Successfully Achieves First Plasma Discharge | Xinxing PORTFOLIO

On January 29, Xingneng Xuanguang — a Heart Capital portfolio company and a leading domestic pioneer in commercializing controlled nuclear fusion — achieved first plasma discharge on its next-generation advanced field-reversed mirror device FLAME at its Hefei experimental facility. This milestone breakthrough marks Xingneng Xuanguang's formal transition from engineering design to physical experimentation, representing a substantive and critical step forward in the global race for commercial fusion energy.

Witnessing First Plasma

At the Xingneng Xuanguang experimental site, Heart Capital partner Yanchen Liu joined the team in witnessing this historic moment. FLAME is an advanced field-reversed mirror fusion device developed independently by Xingneng Xuanguang. Its most notable advantage lies in cost control — construction costs are merely one-tenth those of a tokamak device of equivalent scale, substantially lowering the barrier to commercializing fusion technology. The FLAME device targets plasma temperatures exceeding 10 million degrees Celsius; the success of this first discharge validates its core performance in magnetic field configuration and plasma confinement. Xingneng Xuanguang technical director Ming Liu provided an in-depth explanation of the device's principles, innovative technologies, and construction history on-site.

At the subsequent annual strategic planning meeting, Xingneng Xuanguang chairman Xuan Sun systematically reviewed the 2025 construction campaign and elaborated on the 2026 development blueprint. "The success of first plasma discharge is an important milestone in Xingneng Xuanguang's push toward commercial fusion," said Xuan Sun. "Going forward, we will focus on elevating plasma parameters, progressively achieving higher density, higher temperature, and longer confinement times." In 2026, Xingneng Xuanguang will continue to deepen its work on the field-reversed configuration — a highly promising fusion pathway. Leveraging the superior performance of the FLAME device, the company will further accelerate technology iteration, committed to translating humanity's vision of an "artificial sun" into a viable commercial energy solution. As an early backer of Xingneng Xuanguang, Heart Capital has consistently focused on hard-tech domains with underlying innovation and substantial societal value. Controlled nuclear fusion represents the ultimate dream for human energy, and the exceptional engineering efficiency and scientific rigor demonstrated by the Xingneng Xuanguang team fills us with confidence.

Founded in 2022, Heart Capital is a China-based early-stage venture capital fund focused on technology and digitalization. The Heart Capital team is primarily composed of Lightspeed founding partner Yan Han, core investors, a chief financial officer, and seasoned investors from industry backgrounds. The team's past investments include Xpeng Motors (NYSE: XPEV, 09868.HK) at Series A, Full Truck Alliance (NYSE: YMM) at Series A, MetaX (688802.SH) at Pre-A, as well as RoboSense (02498.HK), FinVolution (NYSE: FINV), LandSpace, Micro-nano Star Sky, Huitian, Xi Wang, Rox Motor, Sunmi, World Logistics, Baichuan, Yunmanman Cold Chain, Fan Deng Reading, Lanhu, Starfield, and others. Rooted in China with a global outlook, Heart Capital is dedicated to finding genuine value in non-consensus. Heart Capital respects the value of "people" and champions the potential of the "heart," looking forward to accompanying more young Chinese entrepreneurs in strengthening China and expanding onto the world stage.