The big guy travels through the book and becomes the female supporting role, torturing the scumbag a

"Wax?" Xie Xiu suspected that he had heard it wrong, or he had misunderstood it. It shouldn't be the wax he was thinking of.

He had never heard that wax could be extracted from coal.

Situ Yuan said, "It's the kind you're thinking of. It can be made into candles. I've asked around, and I've learned that candles are difficult to make and are produced in small quantities. A candle costs two or three hundred coins. A good quality candle can fetch four or five hundred coins. If it's a dragon and phoenix candle, the price is even higher."

The price of coal was controlled by the imperial court. In order to make coal affordable for the people, the imperial court restricted the price of coal, making it cheap and collecting low taxes.

But if coal is sorted and refined into coke, candles, and coal tar, the value of the raw coal can be greatly increased. The asphalt extracted from coal tar can also be used for paving roads.

Xie Xiu was shocked when he heard this, and suddenly understood why Xie Ying said Situ Yuan was professional.

Seeing how calmly and eloquently this kid was talking, he didn't seem like a fake!

If this person can really turn cheap raw coal into coke and candles, then the value will be enormous!

The imperial court controlled the price of coal but not the price of candles.

Candles are expensive, not to mention that ordinary people cannot afford them. Even many scholars are reluctant to light candles and use lamp oil instead.

I just don’t know how much coal is needed to make candles, and how much it costs to make them.

Xie Xiu had too many questions in his mind, so he quickly asked Situ Yuan for advice humbly.

Situ Yuan didn't like being chased and questioned, but for Xie Ying's sake, he still solved his doubts and taught him a lot of knowledge about coal chemical industry.

Xie Xiu was like listening to a foreign language!

He had never known before that those black coal blocks could be refined into so many useful things!

Unfortunately, according to Situ Yuan, due to the current insufficient conditions, it is impossible to achieve fine refining, and we can only roughly extract some usable things.

Xie Xiu was extremely disappointed when he heard this, but after he carefully asked Situ Yuan what he could extract now, he was completely speechless.

What is this kid trying to do?

How can the world compare to heaven?

Being able to extract these is like turning stone into gold!

Turning cheap coal into coke and candles, and using it as fuel to burn glass and porcelain, isn't that turning stone into gold?

According to Situ Yuan, he can also produce colorful glass, which is more expensive.

After Xie Xiu heard him say this, he suddenly understood why Xie Ying was able to hang out with him.

It turns out this guy is also a money-grubber!

Little did he know that Situ Yuan was not actually money-obsessed at all. He said that to him simply because Xie Ying was too money-obsessed and Situ Yuan wanted to use these to please Xie Ying.

Xie Ying's wood-related abilities were extremely useful to him. Even though he was a brain-based ability user, he could find a way to make some medicine.

But how could those medicines be as effective as Xie Ying's wood-based abilities?

So you must not offend this girl!

Seeing that the light in the room was getting dimmer and dimmer, Situ Yuan decisively ended the conversation and said, "It's getting late. I'll go see Yingying first, and then I'll go back."

Although Xie Xiu was a little reluctant to let Situ Yuan and Xie Ying come into contact, but when he thought of what Situ Yuan had said before, he couldn't say no, so he could only take Situ Yuan to see Xie Ying in person.

He had already decided that he would personally watch from the side later. He didn't believe that this guy could still abduct his daughter in front of him!

Situ Yuan guessed what he was thinking and pressed the corners of his lips speechlessly: "..."

Since Xie Xiu insisted on seeing it, he could only give him a little Sakura shock.

Xie Xiu took Situ Yuan to meet Xie Ying.

When the two arrived, Xie Tang was playing Nine Rings with his younger brother. Xie Ying sat aside watching the fun with a look of disgust on her face, while Xie Rou was playing the pipa at ease.

Tu Jiaojiao stood by and looked at the four children with a smile.