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.
The Philosopher Goddess suddenly said to him, "I bet that you don't know the answer to this, am I right?"
Ji Yuan: …
How the heck does she know?
But he forced a smile and said solemnly, "Of course I know. You mean, you don't know the answer?"
The Philosopher Goddess hummed coldly, "I am asking you first."
Ji Yuan: …
Aren't you a little too shameless?
"Well?" the Philosopher Goddess asked him. "Do you know the answer or not?"
Ji Yuan said to her, "If I reveal the answer to you then you will trade the Divine Philosopher Stone with me?"
The Philosopher Goddess said nonchalantly, "I will consider it."
Then she quickly said, "So, what is the answer to this question?"
Ji Yuan chuckled as he took out two lodestones, "Do you know what is a lodestone?"
The Philosopher Goddess frowned, "Of course I do. The stones are able to attract or to repel each other."
Ji Yuan grinned as he looked at the Philosopher Goddess, "The lodestones are divided into the Yang stone and the Yin stone. Yin and Yang will be able to attract, much like man and a maiden…"
Shui Xisi frowned as she whispered to Ling Feiyue and Xue Qianxue, "This sort of example definitely comes from Ji Yuan…"
There was a flustered look on the Philosopher Goddess when she had heard Ji Yuan making the comparison between a man and a maiden. It was more so when he was grinning and staring at her.
Ji Yuan was indeed staring at her enticing bosoms and butts.
He chuckled softly as he added, "The sun is like the yang stone and all the planets are like yin that are attracted to it…"
The Philosopher Goddess frowned, "Wait a minute. Yang and Yin will attract. This doesn't explain why the planets don't fall into the sun."
Ji Yuan chuckled, "I am about to get there, you know."
Then he grinned, "As you know, the same yang and yin will also repel against each other. Therefore, it is the yin that is inside the sun that is also preventing the yin planets from falling into the yang sun."
The Philosopher Goddess was quiet for she could find no loophole with Ji Yuan's logic.
Ji Yuan grinned, "So we can have our trade now?"
The Philosopher Goddess hummed coldly, "I say that I will consider it. I didn't say that I will agree to the trade."
Shui Xisi, Ling Feiyue and Xue Qianxue were angrily staring at the Philosopher Goddess now and they felt that Ji Yuan had been tricked by her.
Even the Demoness Empress An Xuanji was feeling unhappy at how shameless this Philosopher Goddess was.
Ji Yuan: …
This is too shameless…
Xiang Li giggled: Big Brother, I think she learnt this from you.
Ji Yuan: …
He frowned back to Xiang Li: Shut up, Xiang Li.
The Philosopher Goddess took out a 13 string golden harp, "If you can understand what I am playing then I shall agree to the trade."
Ji Yuan said panicky, "Wait a minute! This is also a philosophy question? What does music got to do with philosophy?"
The Philosopher Goddess smiled wryly, "Music is the inspiration of all things philosophy. Don't tell me that you don't understand music?"
Ji Yuan smiled bitterly, "I happen to be extremely good in music too. But I have never played a 13 string harp before."
The Philosopher Goddess smiled coldly, "Of course you haven't. It is because it is a special music instrument of my Nine Abyss Realms."
Ji Yuan frowned, "You will agree to the trade if I can decipher the meaning behind your music?"
The Philosopher Goddess raised her hands and she swayed her slim figure, "I am the sovereign of this place and there are hundreds of desolate immortals here as my witnesses here. Will I be so shameless as to break my promise?"
Ji Yuan frowned, "Alright then. Please carry on."
The Philosopher Goddess gently put the harp on the ground as it was a large harp before putting her delicate fingers across it to play it.
Her fingers moved rapidly across the harp and it produced a beautiful music.
The music was harmonious and it was also beautiful.
Even the Goddess Destiny had an interested look as she listened to it.