Once a cultivator broke through, not only would their dantian's capacity expand, but more importantly, their true Qi would also undergo a qualitative leap. With the same amount of true Qi, there would be a huge difference between a cultivator of the eighth and ninth Qi levels. The density of their true Qi would increase even further.
Wisps of true Qi were continuously compressed in his dantian. The "great Dao Arts" technique did not stop for a moment. The true Qi in his dantian was also approaching the limit of its density.
The spiritual energy within the spirit map was rather abundant. Furthermore, Xia ruofei was within an array that was 70 to 80 times slower than the time of an Archean realm expert. Hence, the spiritual energy consumption per unit of time was tens of times greater.