On July 22, 2023, "Virtual Fes 2023 Hong Kong" — the city's first in-person offline VTuber concert — was successfully held. CHINGMU served as the exclusive motion capture technology provider for the event, delivering full end-to-end motion capture support. Using the proprietary domestically developed Prometheus lightweight optical motion capture system, high-precision, low-latency optical cameras precisely tracked and real-time reproduced the dance movements of multiple performers. Following processing through CHINGMU's proprietary anti-occlusion algorithm, the virtual idols' performances were rendered live on LED screens with remarkable fluidity and realism — maintaining uninterrupted tracking of fine body parts including hands and feet across all multi-performer interactions, creating a deeply immersive experience for every audience member.