While the Philosopher Goddess was still pondering the question, Ji Yuan grinned as he picked up a pebble from the ground before dropping it again. "The force of gravity causes a smaller mass to drop toward a bigger mass like this."
The Philosopher Goddess frowned, "This I know…"
Ji Yuan chuckled softly, "I am only trying to give you a hint."
There were several awkward looks from the maidens in Ji Yuan's group as well as they began to ponder Ji Yuan's question but none of them knows the answer to this question.
Even the Humanoid Natas, the Divine Messenger Jiu Baren and the dozens of immortal cultivators that were surrounding them all had a blank look; this question was too tough!
Even Xiang Li and Anyang were asking Ji Yuan inside his soul sea: What is the answer to this?
But Ji Yuan ignored Xiang Li and Anyang as he was grinning proudly at the Philosopher Goddess.
