Outside was the dead night, and in Old Man Xu's room, a table lamp was bright, casting two staggered shadows on the wall.

"Hey, eighteen years ago, we were a well-known and wealthy county. Old man, I was still a senior engineer of the State Grid, and the people who wanted to go on a blind date with me and talk to the matchmaker lined up for a long time......"

"At that time, the leader of my company introduced me to a distant cousin of his, and I had to go over to take a look, hey, the leader has such a big and three rough appearance and such a smart cousin, which really gave me a surprise. ”

"Then we fell in love, got married, had children, and lived ...... days"

Half an hour later, while drinking and chatting, opposite Chen Chong, Old Man Xu blushed and had a thick neck, and took a sip of the wine in the cup again, looking slightly smoky, chattering about his past:

"The cataclysm came, earthquakes, tsunamis, volcanic eruptions, animals began to turn into monsters, and countless people died inexplicably, and in just a few days, the world changed. ”

"The city is gone, the government is gone, my parents are gone, my wife and children are gone, there is nothing, and I am the only one left. If I hadn't been afraid of death, I would have gone down to accompany them. ”

"You say...... It's good, why is it like this?"

Chen Chong listened silently, poured wine for Old Man Xu from time to time, shook his head and said:

"Maybe you can think of it from another perspective, they are actually luckier than us living in this treacherous wasteland. ”

"yes...... I can only comfort myself like this. ”

Old man Xu secretly wiped his eyes and smiled self-deprecatingly:

"Hey, what am I talking about. You should have been a young man at that time, and it shouldn't be easier for you to live until now than the old man and me. Your kid is still an awakened person now, at least he still has some choice in this world, and he is much luckier than most survivors. ”

Chen Chong blinked his eyes and smiled faintly: "They all live under the hands of General Blood, life and death are not up to them, everyone is just half a catty and eight taels." ”

Old man Xu's eyelids couldn't help jumping, and he hurriedly lowered his voice and said: "Boy, you don't have to say anything like this, especially don't complain like this in front of other people, people are unpredictable, and some people can't wait to eat human blood steamed buns!"

"Of course, it's just casual chatter. ”

Chen Chong poured wine for Old Man Xu again, diverted the topic, and continued to knock on the side, pulling things around.

From the great changes in the world when Old Man Xu was young, struggling to survive, to the appearance of the Awakened, encountering the Blood General, and then watching the Blood General step by step transform a survivor gathering place into a crimson territory by his own brutal dictatorship, in the chatter of Old Man Xu, a bloody history was displayed in front of Chen Chong.

"Blood General, it's really terrifying......"

With glass after glass of wine, Old Man Xu's face was flushed and he was slightly drunk:

"So, here, the general is the sky, as long as you obey and show your worth, you can live a good life. ”

Chen Chong smiled, seeing that it was almost over, he glanced at the table lamp in Old Man Xu's room, and pretended to ask casually:

"Lao Xu, how did you get the electricity here, directly from the substation, how do you control the current and voltage freely?"

Old man Xu didn't doubt him, and laughed: "You are really a layman, I thought you would ask some advanced questions, these things are too simple, I'll tell you ......"

Finally brought the topic to the power station, Chen Chong's eyes were burning, and he kept every word of Old Man Xu in his heart.

I have to say that when it comes to the field that Old Man Xu is proficient in, even if alcohol numbs his brain, he speaks clearly, and he only speaks in an orderly manner, which makes Chen Chong quickly make up for these basic knowledge in his heart.

The voltage generated by the motor unit of the entire power station is about 10,000 V, and the stable voltage is adjusted by the substation box and then transmitted by the power grid to General Blood's manor and various factories. And Chen Chong wanted to connect his flesh and blood body to the current for cultivation, and there was another set of devices to regulate the voltage, as well as wires of appropriate thickness to adjust the electrical energy exported from the substation box to a safe level.

"That's how it works, and there's ...... at the end"

As he spoke, Old Man Xu suddenly stood up, began to rummage through boxes and cabinets, found a device the size of a suitcase, and said:

"This is the voltage regulator I made myself, and the electricity I connect to the desk lamp is through...... Hey, it's not clear just to say, look at the old man, I'll give you a practical operation!"

I don't know if it's because of the upsurge of alcohol or because he is a good teacher, Old Man Xu suddenly stood up, picked up a tattered fan from the ground, as well as insulating gloves and a large bundle of wires of different thicknesses, and said with a big grin:

"You kid come with me!"

Chen Chong was overjoyed in his heart, and then thought of something, and frowned: "Old Xu, have you drunk a little too much? ”

Old man Xu's eyes widened, and he blew his beard and glared: "What are you kidding, old man, I have dealt with electricity all my life, and I just have no problem wiring with my eyes closed!"

With that, he took a steady step and walked out of the room in the direction of the substation. And Chen Chong saw that although Old Man Xu was blushing and his neck was thick, his steps were steady, not like he was not sober, and then he thought of his cultivation plan, he still followed.

When he came to the substation, although Old Man Xu was bubbling with alcohol, his eyes became extremely sober. He wore insulating gloves, opened the locked door, and said to Chen Chong like a teacher teaching a student:

"See, the voltage is also called the potential difference or potential difference, and its direction is defined as the direction from the high potential to the low potential......"

Old man Xu explained to Chen Chong in detail while choosing a thin wire with a millimeter diameter, connecting it to the substation box, and then passing the other end of the wire out of the voltage regulator, and finally connecting it to the tattered fan.

Old man Xu clapped his hands and pressed the switch of the fan.

Call......

The blades of the fan suddenly turned, bringing a hint of coolness in the hot space.

Chen Chong engraved all the links of Old Man Xu's movements in his mind, and at the same time saw Old Man Xu quickly dismantle the circuit, and then took off the insulating gloves and handed them to himself.

Old man Xu said with a smile:

"Remember, if you remember, try it, if you don't remember it, it means that you kid is a fool, and you are not suitable for learning this, so we will go back to drinking at once, and we don't have to waste time." ”

Chen Chong took the gloves, his learning ability and memory had already been developed by the super divine water, exceeding the level of ordinary people, he quickly and neatly repeated the previous operation of the old man Xu, and finally pressed the switch to make the fan spin.

Old man Xu's eyes lit up: "Boy, you can!"

Chen Chong is more or less a modern person, and he still has basic knowledge of circuits, plus there is also an explanation and demonstration by Old Man Xu, so it is not difficult to repeat it.

What's more, the operating principle of [Electrotherapy] is not complicated, and now after Old Man Xu's explanation and demonstration of voltage and current control, Chen Chong's heart has suddenly brightened up and he is eager to try!