Chapter 646 – The Yellow Springs River

… … … If Lin Ming wanted to research and understand the situation about the enclosed space force field, he would have to walk around and slowly find out what the governing rules were. But, there was a prerequisite. This was that he needed to be able to leave marks along the way! When Lin Ming had placed down marks before this, they had only lasted for two incense sticks of time before being cleanly erased. That definitely wouldn't work. After thinking for a while, Lin Ming...