On June 30th, reports surfaced indicating that Space Pioneer had recently accomplished a continuous, extended-duration qualification test of the 110-ton liquid oxygen/kerosene engine, designated as Liqing-2. This rigorous test comprehensively assessed the engine's operational reliability, paving the way for its future role as the primary powerplant for the reusable rocket 'Lijian-2'. An extended-duration test entails subjecting the engine to an ignition period significantly longer than what is required during the rocket's actual flight, thereby verifying its endurance under extreme conditions. Throughout this evaluation, the engine's operational span extended to 3.5 times the duration of the rocket's typical flight time, successfully completing a 620-second ignition trial. Notably, a single ignition sequence lasted 400 seconds, establishing a new benchmark for the engine's sustained, stable operation.