Refining Materials? Presumptuous! I Am the Molong Emperor

Lin Mo traveled through time and became a dragon. But he found that he was just a weapon refining material. Using the entire planet as a breeding ground, airtight supervision, enemies as powerful as gods... Lin Mo spent two hundred years silently accumulating, and finally found the only chance of escape from this airtight prison. O my enemies! You must live well. When I return, you will feel the most desperate fear!