Compared with coal mining, the most difficult thing is the detection of coal.

The Tang Dynasty did not have so much high-tech equipment, unlike later generations, only need to collect sample soil for machine testing, you can analyze what is under the unearthed and whether there will be minerals.

How was mining in this era? Some of the most primitive methods are used.

For example, sifting the soil quality of a place and using the naked eye to distinguish whether there are visible ores in the soil, or tying a magnet to the hoe and digging to see if the magnet reacts.

This method of mining is mostly for metal minerals and is very inefficient.

Fortunately, the use of metals in the Tang Dynasty was not high, and the mining technology was immature, and a mine could be mined for decades.

But the coal mine that Chen Fei needs is different! He has a map of the distribution of coal mines, so he can clearly know where there are coal mines, so he saves a lot of time for exploration.

As for the collection of coal mines... It's a lot more convenient than metal anyway!

"Uncle Cheng doesn't have to worry, I just need to bother Uncle Cheng to organize a mining team, as for knowing where there are coal mines, I will find a special way to find coal mines."

Cheng Yanjin stared at Chen Fei for a while, and saw that his expression was serious, his eyes were clear, and he couldn't help but be secretly surprised: "Where did this kid come from so many unpredictable skills?" ”

"Okay, the old man will arrange manpower and give you an answer in a few days." Although he had doubts, Cheng Yanjin still chose to believe Chen Fei, and his intuition told him that Chen Fei would not lie to him.

What's more, the profits of coal are so tempting that Cheng Cheng can't refuse.

There is no surplus food in the grandfather's family, this big family, so many servants, tribes, and several unsuccessful sons and their families live in the mansion. There are no less than hundreds of people in the entire Guogong Mansion, and what a huge expense is the daily food and clothing of so many people?

What's more, Cheng Yanjin's recent consciousness is very high, and he aims to "let everyone eat meat and wear silk", and happily takes a large family to a well-off.

What does Ben Xiaokang need? Money!

Therefore, Lao Cheng treats business as "like dust" on the surface, and he doesn't want to dislike it, but in fact, he has long been happy in his heart.

"Boy, the profit will still be fifty-five percent at that time."

Yes, five or five points has become a common practice, and Chen Fei has nothing to say, so he agreed to Cheng Yanjin's request.

The Cheng family's banquet continued, but after chatting about business, the three people on the wine table were obviously very high-natured, as if they had been constipated for many days and finally smoothed, and they were comfortable, and the topic of conversation gradually became pleasant.

As soon as the topic opened, the wine that helped the fun was also poured down one by one, Rao is wine is not high, Chen Fei still felt a little drunk, and there were double visions in both eyes.

Cheng Yanjin was more hilarious, drank too much wine and played drunk madness in the palace, holding a jar of wine, and staged a realistic version of "Monkey Drunk and Troubled Heavenly Palace" in front of Chen Fei.

No, it's "Orangutan Drunk and Haunting the Heavenly Palace".

Chen Fei felt that it was a very gratifying thing to be able to find and correct his mistakes even when he was drunk.

Cheng Yanjin poured a big sip of wine into his mouth, and then twisted his ass and sang, Cheng Chumo was also influenced by his father, and hugged Cheng Yanjin shirtless, dancing and singing at the same time, two big men, the painting style is simply spicy.

Chen Fei didn't hear what he was singing, anyway, one thing is certain, that is, the singing is really too ugly, and finally he couldn't help it, and he vomited in such a tormented singing, and spit out everything he ate, and then felt that his body was light, and he was completely drunk to death in the magical land of Lao Cheng's family.

............

"Dizzy! It's uncomfortable! Chen Fei woke up in pain with his head in his arms, and stayed in bed for a while before he remembered that he was drunk at Lao Cheng's house before, so if nothing else, he should be in Cheng Biting Jin's Mansion now.

It is worthy of Grandpa Guo's mansion, and a temporarily vacated guest room is much better than where Chen Fei usually lives.

After Chen Fei slowed down, he pushed the door out, and under the moonlight, the untouchable heat wave rushed towards Chen Fei one after another, making Chen Fei more and more unable to raise his eyelids and drowsy.

"It's already night, huh? Looks like I can't go back today. Chen Fei muttered.

At this time, a little maid in the side hall of the guest room pushed the door out with a yawn, and saw Chen Fei hurriedly restrain her behavior and salute Chen Fei.

"Son, you wake up, the master has explained, if you have any needs, you can tell the slave maid, and the slave and maid will do it for you."

This... And the maid to serve? Is this the legendary feudal life? If I ask to be bedridden, will this little girl say yes or yes?

Chen Fei thought evilly.

The little maid saw Chen Fei's gaze and asked simply, "Childe?" Do you need a slave to do anything? ”

Listen up! This was left behind more than a thousand years ago to deal with the solicitation of customers in some bad street small corner hair shop, but now it ......

The little maid is too young, not very well developed, and Chen Fei is not the kind of person who is beastly when he sees a woman, so he let her go with a wave of his hand.

"It's nothing, I'll just come out to breathe, by the way, Uncle Cheng is asleep?"

The little maid didn't know if Cheng Yanjin slept or not, so she had to apologize to Chen Fei, and then turned around and went out to ask others.

After a while, the little maid came back and told Chen Fei that Cheng Cheng was drunk and had slept until now and didn't wake up, but Cheng Chu got up silently, heard that Chen Fei woke up, and rushed over to see him.

Chen flew to the door of the small courtyard and looked..."! Hell! ”

"Ghosts? Where are the ghosts? Lao Tzu has lived so long and has never seen a ghost? ”

When he got closer, Chen Fei realized that it was Cheng Chumo's teeth and eyes that scared him just now.

Because Cheng Chumo was too dark, he could only see his snow-white teeth and eyes in the dark......

"It's nothing, it's just that I'm dazzled. Hey, little grandfather, no, Brother Cheng, I'm hungry, do I have anything to eat? ”

Cheng Chu smiled silently: "Coincidentally, I was woken up by hunger, and I was trying to get up in the middle of the night to find food, why don't we go to the kitchen to find it together?" ”

The two men woke up hungry in the middle of the night and hit it off with the idea of going to the kitchen to find food.

After all, Chen Fei was a guest, his face was relatively thin, and he was very "shy" to let the little maid keep it secret for them, and then like a happy husky, his eyes exuded a desire for food, and he rushed to the kitchen first.

Cheng Chumo watched Chen Fei run away, scratching his head and wondering: "Huh? Why is this guy running so fast? Isn't the kitchen on that side? Am I mistaken? ”

After a while, Chen Fei came back panting like a pug, fanning himself with his hands, sticking out his tongue and saying, "Cheng... Brother Cheng... Forgot to ask, where is the kitchen? ”

Cheng Chumo ......

You don't know if you're still running around! I almost got knocked out by you!