There were two spirit stones on the table, yellow and purple. Feng Zhong Tian took a green coloured one from his storage ring and placed it on the table.
Feng Ao Xiu happily said, "Father, you found it! You find a pure coloured spirit stone! I knew I could count on you! You need to know how much I suffer from Qian Qian."
"So all these three are pure coloured spirit stones!? How are they any different from an ordinary spirit stone?"
Naturally, Feng Zhong Tian could not hold his curiosity behind the secret of the pure coloured spirit stones. Finding these stones were not easy, and he couldn't even ask his servant to do it as Feng Ao Xiu told him to keep it a secret. He took hours before finding one. However, if these stones really could help with cultivation, then it's worth it.
"That's why I'm here!", replied Feng Ao Xiu.
"I'm here to show you", Feng Ao Xiu points his finger at Qian Qian, "and these two idiots! The importance of pure coloured spirit stone!"
"Explain it then!", Feng Zhong Tian sits down in a chair beside Qian Hui and Qian Lu. The three men began listening to Feng Ao Xiu.
"First, let's start with an ordinary spirit stone. An ordinary spirit stone has at least 2 or 3 different colours, even sometimes have 4 to 5 colours. However, one spirit stone supposed to only have one colour, the original colour is the one with the majority of it. But it contains a mark, or spot, or scratches of another colour. These other colours are impurities."
"So all the other spirit stones are impure!", asked Qian Hui.
"Yes! Exactly! But, this impurity does nothing harm at all. Cultivating, using an ordinary spirit stone or the pure coloured spirit stone will produce the same result. Once the spirit stone is used, the Qi inside the stone will move to your body and your cultivation will increase by a bit, while the spirit stone will vanish and turns to dust. Then, in a couple of days, the impurity consumed will disappear by itself"
"Then, it wasn't impurity at all!", asked Feng Zhong Tian.
"For us, it's not! But to the spirit stone, it is an impurity!", Feng Ao Xiu picked up the green-coloured spirit stone. "The pure coloured spirit stone has a Qi known as Color Qi, the red pure coloured spirit stone has a red Color Qi, this green one have green Color Qi, so does the other colour. But, the Qi in an ordinary spirit stone were mixed together and turned to grey or black."
"Let me ask something! Which colour that all the spirit stone doesn't have?"
"White! It's white!", said Qian Hui. "All the spirit stone doesn't have any white colour! Even not a single spot has any white colour."
"That's right!", Feng Ao Xiu nodded. "The truth is every cultivator only needs the white Color Qi to cultivate. It was also known as Pure Qi. Pure Qi is a Qi that cleanses your body against everything, including the deadliest poison. Unfortunately, the impurity I mentioned earlier cleansed out this Pure Qi when we consume it."
"Could it be! Yang Xue Yi is..." said Zhong Tian.
"That's right!", Feng Ao Xiu nodded again. "I fed her Pure Qi!"
"How do you make this Pure Qi? There is none of the spirit stone with white colour", asked Qian Hui.
"That's where the pure coloured spirit stones do its work.", Feng Ao Xiu looks at his father. "Father, It's your turn now! At least a Dream Mortal Realm Cultivator is required to make the Pure Qi"
"What do I need to do?"
"There are three glasses of water on the table. I want you to move the Qi from each of the spirit stones into the water using your Spirit Qi. Remember, don't consume them!"
Feng Zhong Tian concentrated on his Qi Aura. He slowly moves the Qi from the yellow spirit stone to the water. After ten minutes, the water in one of the glasses turned yellow, and the spirit stone lost its colour while turning into dust.
"This so tiring! It took ten minutes just to move the Qi from one stone!"
"People usually take the Qi to cultivate directly, moving the Qi is troublesome. But this process is needed to make the Pure Qi. Father, there's still two more!"
"Ugghhh...", Feng Zhong Tian felt upset, only he was strong enough to transfer the Qi.
After twenty minutes, there's three glass of water with different colour, yellow, purple, and green.
"What now!?", asked Feng Zhong Tian while breathing heavily. Moving the Qi takes quite a toll on him.
"We mix it!", Feng Ao Xiu took all the three glasses and pour all the water in a bucket. Then, he stirs the water with a chopstick.
After the water turned all black, Feng Ao Xiu stopped and scratch his head.
Qian Hui asked, "What's wrong?"
Feng Ao Xiu embarrassingly said, "Ah... Umm... I don't know! I... I forgot the step!"
"You forgot the step!?", Feng Zhong Tian angrily shouts. "Do you know how much I suffer from moving those Qi! And you... You forgot! Look at this water! Which one of those is white? They're all black! Black! What Pure Qi!? This is more like the Impurity Qi!"
"Wait! There's something important missing! What is it?", said Feng Ao Xiu while scratching his head with both hands.
"Did you just say 'wait'!? What wait? Might as well just throw it away! Do you think waiting could change anything? Think of something like boiling it or add more water!"
"Ahhh, That's it! Father, what did you just say?", Feng Ao Xiu asked.
"Which one? Add more water?", Zhong Tian replied confusedly.
"No! No! Before that!"
"Boiling It?"
"No! No! It's the one before that!"
"Ah, you must mean waiting! Will waiting change the colour to white?"
"No! No! It's not that either!"
Qian Hui replied, "The Clan Lord said, to wait... To throw it away... Add water, and..."
Feng Ao Xiu clapped his hands, "That's it! Throw it away! Let's throw it away!"
[Throw... Throw it Away!?]
Feng Zhong Tian and Qian Hui's mouth were wide opened.
[What the hell are you saying? You're the one who is obsessed with pure colored spirit stones, then you collect them like a maniac. But before even getting the benefit, you want to throw it away! What the hell do you think you're doing!?]
"What do you mean by throwing it away!?" Feng Zhong Tian continued to scold his son, "We made it this far and you want to throw it away!?"
"No! What I mean is the process of creating the Pure Qi is done! This black water is the residue of Pure Qi, while the Pure Qi was hidden underneath. Once we throw the black water away only the Pure Qi will remain."
Feng Ao Xiu pours the black water into another basket. Almost all the waters are black, only the last small amount of waters is white-coloured. Then, Feng Ao Xiu poured the white liquid into a small glass bottle.
"Done! This is the Pure Qi!"
Qian Hui eyes are following the small glass bottle, "So, this is the Pure Qi! What happens if you use an ordinary spirit stone?"
Feng Ao Xiu explained, "If you use an ordinary spirit stone, it will just become grey or black. No pure Qi could be created!"
Feng Zhong Tian said, "I see, but isn't it too small?"
Qian Hui said, "Yes, it's too small! It seems less than one-third of Lady Xue Yi's amount!"
Feng Ao Xiu replied, "It's small, but from three spirit stone this is already considered good. Fairy Xue Yi's Pure Qi was created from twenty pure coloured spirit stone!"
Feng Ao Xiu tossed the Pure Qi to Qian Hui, "Drink It!"