Zhang Xiaohua didn't know how much time had passed when he felt the energy of heaven and earth that he had absorbed in his body begin to stabilize. The extremely pure and abundant energy flowed into his meridians as soon as it entered, turning into his True Qi after a cycle of refinement and being stored in the middle of his chest (middle dantian). Zhang Xiaohua carefully noticed that the True Qi in his middle dantian was much more dense than before. The quantity was similar to before, but the quality was noticeably different.