The two were based on a similar principle. Both involved a fixed movement to release internal pressure and build momentum. The difference was that the steam engine's movement was mechanical, traceable, and had little variation. Zhang Beixing's movements, however, were entirely chaotic, as if mysteriously corresponding to something. But due to the limitations of their understanding, they couldn't discern what exactly Zhang Beixing was corresponding to. After a moment of fruitless contemplation, they simply gave up.
They just watched as Zhang Beixing adjusted his state to its peak. Yang Ying, realizing it was time, immediately ordered, "Begin the test!"
BOOM!
Almost the instant he finished speaking, the Postnatal Five Qi coursed through Zhang Beixing's meridians, stimulating his acupoints. Visible to the naked eye on the monitor, several points in Zhang Beixing's thermal image flared with intense light!
