Chai Lingwu's trick of pretending to be ill can't fool a lot of dandies.

In the laughter of the crowd, they ignored the dissuasion of the Chai mansion housekeeper and broke into the Chai mansion.

Anyway, they know each other well. They have been to their homes many times. They are already familiar with the way. They also know where Chai Lingwu lives with their eyes closed.

The Chai family housekeeper could only shake his head and smile bitterly, and followed the dandies to the courtyard where his little husband lived.

"Brother Lingwu, I heard you've eaten badly. We've come to visit you and come out to meet you!" Fang Yiai shouted at the throat as soon as he entered the courtyard where Chai Lingwu lived.

Seeing that his tricks were seen through by a group of bad friends, Chai Lingwu had to go out of the house with a painful face and bow to the dandies.

"Ladies and gentlemen, why bother? Can you admit defeat? Ziyou, the calligraphy of Wang Youjun is really my brother's heart. Can you change one? How about I give you ten beautiful singers?"

When Chai Lingwu saw that Li forgot to worry and came to the door, he didn't know where he was going to lose. He quickly softened and begged for mercy.

As for the conditions he put forward, Li Qieyou scoffed!

Bah, young master, am I that kind of person?

Let alone ten singers, what about twenty?

Young master, do I dare to bring it home?

Hemp egg! If you don't open any pot, I'll be angry!

"Brother Wu, it's hard to catch a gentleman's word! Don't look like a woman. Hey, where's the calligraphy of Wang Youjun?"

"Ziyou, do you have to be like this? Really don't care about brotherhood?" Chai Lingwu said fiercely, staring at Li forgetful's eyes. He looked like he was going to kill with Li forgetful.

Li forgot to worry, but he didn't eat it at all: "there are no brothers in the casino! Don't talk nonsense. Hand in the calligraphy quickly and spare you!"

The dandies laughed and shouted, asking Chai Lingwu to hand over the calligraphy quickly, otherwise they would have to search his room in person.

In the face of these bad friends, Chai Lingwu can't pretend anymore. He can only be obedient and soft.

"You're cruel! Hum, you bastards, don't fall into my hands in the future. Let's go. I'll see if Ziyou has any ideas and can work out the mechanism that can sell drinks automatically without manpower."

Chai Lingwu is naturally not really angry. Although Wang Xizhi's calligraphy is rare, it won't let him cheat. It's just a joke between friends.

"Ha ha, that's right. Go, go, go. Ziyou has placed the mechanism in the east city. You'll find out in person when you go." Chumo laughs, pulls Chai Lingwu's sleeve and walks out.

Li forgets worry and a group of dandies, laughing and riding to Dongshi.

In addition to tea and drinking, there is also a popular "fat house happy water" in Datang.

Naturally, there was no such name as drink in the Tang Dynasty. Dandies learned from Li forgetful worry before they said the word drink. In Datang, drinks are called "cooked water".

There are many shops selling boiled water in all the shops in Chang'an City, and there are many kinds of drinks.

There are fruit and vegetable juices, such as watermelon juice, sugarcane juice, grape juice and dark plum juice, which are often drunk in future generations.

The second is dairy products, which is called "buttermilk" in the Tang Dynasty. Common are goat cheese and horse cheese, that is, goat's milk and horse's milk.

Finally, Yinzi, that is, traditional Chinese medicine granules. It is the same as the herbal tea that later Cantonese like to drink. It is boiled with various traditional Chinese medicine, which has health care effect.

Li Qieyou led the dandies to a shop selling cooked water in Dongshi, where a row of cabinets covered with red silk were placed.

When passing by the cooked water shop, people in the east city cast curious eyes. They didn't know what these tall, square and upright cabinets covered with red silk were.

A familiar customer inquired with the shopkeeper of the cooked water shop. The shopkeeper just smiled and replied that it was a novelty made by huxianzi. We'll know later.

This makes people more curious, discussing and guessing with each other.

Li forgot to worry about gambling with Chai Lingwu and made the automatic beverage vending machine. Originally, he just wanted to win Wang Xizhi's calligraphy from Chai Lingwu.

He did not intend to promote the beverage vending machine in Chang'an city. After all, he thought it was not very profitable and troublesome.

Just want to constantly add drinks to the beverage machine, Li forgot to worry about the idea of industrialization. Should he open another boiled water shop, boil drinks every day, make ice with saltpeter, and then replenish the vending machine?

The profits brought by this automatic beverage vending machine have long been despised by Li Qieyou, who is rich.

However, his idea was ridiculed by the beautiful boss.

Li is still unconvinced and plans to have a good debate with the top student of the University of Pennsylvania business school.

"Changqing, am I wrong? This drink is sold automatically. Do you still want to be your family's industry?"

"Hum, I ask you, how much does your machine cost?"

"Er, I asked Yan Liben to ask the craftsman who will be the supervisor to do it, about ten times."

"OK, even if it's ten times. How much do you plan to sell a drink? How much does it cost?" the beautiful boss asked again.

"It can still make money. The price of this machine can be adjusted from ten Wen to fifty Wen, which can be adjusted according to the drinks sold. As for the profit, I asked the shopkeeper of the cooked water shop, it can be about 80%."

The beverage vending machine designed by Li Qieyou can automatically flow out 500 ml of beverage at a time, which is equivalent to the amount of a bottle of mineral water in later generations.

Drinks are definitely not cheap consumer goods in Datang.

In this era, the cheapest wine is about 150 Wen a bucket, that is, 2000 ml, and the price of cooked water is slightly cheaper than cheap wine.

According to the conversion that one Wen is almost equal to four yuan in future generations, a cup of 500 ml inferior wine costs 150 yuan.

The same amount of cooked water, equivalent to 40 to 200 yuan, is much more expensive than the milk tea in later milk tea shops.

As for Yinzi, it's even more expensive. "Taiping Guangji" has such a record: "when Chang'an finished its prosperity, there was a family selling drinks in the western market,... One hundred Wen for one service...", one hundred Wen for one service, that is 400 yuan, which can be called a sky high price.

As for Li's answer, the beauty boss nodded and continued, "it's good to earn 20 Wen a cup according to 30 Wen a cup. A beverage vending machine sells 100 cups a day, isn't it much?"

Li forgot to worry and shook his head: "not much."

"Then one can make two runs a day, and you can recover the cost in five days, right? This summer is so long, you're afraid you don't make a profit? If there are 100 vending machines, you can make 200 runs a day."

After the beautiful boss said something, Li forget worry was speechless. It took a long time to mumble and answer, "but we don't have so many people to cook drinks. How many more people do we have to invite? Isn't that also the cost?"

His words made the white eyes of the beautiful boss turn to heaven. He disdained to throw him a disdainful look: "you're stupid..."