Chapter 270 Challenge the Sky Group Headquarters

A month had passed in the blink of an eye, and Qin Hao had to go back. Before he came here, Li Zhanwu asked so sincerely that he had to go back in a month, since the oil battle he would need Qin Hao.

During the past month, what Qin Hao had suffered was beyond ordinary people could bear, but he had also made great progress.

He had strengthened Peak of Fourth Stage Martial Cultivator and had greatly improved Skin Refining. He had already begun to cultivate the third stage-Bone Refining of Eternity Spell.

Bone Refining would make people bones invulnerable. One wouldn’t be hurt at all if he had suffered a powerful attack, or even he had jumped directly from a building that was several ten stories high without using Qi to protect his body. Of course, it was also powerful for people to attack, who had mastered Bone Refining. The attack of bones as hard as steel was really amazing.

Once Bone Refining was mastered, plus Skin Refining,