C616 Vajra Unbreakable Body

"I don't know if I should say you're useless. What?" Wu Lai shook his head and was very dissatisfied. "The Vajra Unbreakable Body. Normally, you can achieve small success after five years of cultivation. Only after ten years can you become a master. After fifteen years, you will be infinitely close to becoming a Grandmaster Alchemist