Up to this point, they had read about 60% of the "Great Empress Heart Sutra". The remaining 40% mentioned the details on the cultivation after Spiritual Energy was created. As for anything that had to do with Yin-Yang integration of Spiritual Energy, it was inseparable from dual cultivation.
What made Lin Xintong's ears become even redder was that the dual cultivation written in the "Great Empress Heart Sutra" also paid close attention to postures as well as energy circulation.
The energy circulation was fine, but the dual cultivation postures made Lin Xintong extremely embarrassed.
In fact, several martial arts manuals would include cultivation formulas along with the actions the person learning it should perform. Some manuals would even draw out human figures, indicating what a warrior needed to do.
