This situation resembled the time he experienced the cave-in back on Earth. Trapped under the earth, the Purple Crystal had accompanied him in that quiet and dark environment.
Yi Yun also felt that the Purple Crystal was like his life’s last refuge. When his organs were damaged under the immense water pressure, the Purple Crystal would silently repair his organs. It allowed him to not only experience the immense water pressure but also recover in the shortest time possible.
Yi Yun lost his sense of time underwater. He kept following the theories of “Dragon Rib Tiger Bone Fist” by circulating his energies. When he felt his breath was mostly used up, he began to swim upwards.
Deep-sea divers would usually not have much energy or air. As swimming upwards consumed a lot of energy, most people on Earth used devices like balloons to propel their bodies upwards, but Yi Yun had to rely on himself.
This was without question a great test for Yi Yun’s heart and lungs.