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The iron-grey giant wings advanced at an altitude of ten thousand meters, where the aligned engine nozzles continuously spouted blue flames. Due to the extremely high velocity of the exhaust, the wake formed overlapping oscillating curves reminiscent of a trigonometric function, creating brilliant circles at the intersections, known in physics as 'Mach rings'.
Propelled by the augmentation of triple rings, even the heavy aircraft was able to push through the layers of airwaves, moving forward at a speed exceeding the speed of sound.
Hexia leaned against the wide seat by the window, taking a brief nap. This transport aircraft's fuselage, which used to carry mechas and war chariots, had been replaced with a passenger module.
