When Luo Zhi woke up, the sun had already set, and the sunset on the western horizon was blooming gorgeously, fiery red clouds covered the sky, and behind the clouds was the sky that gradually turned into a dark blue. Luo Zhi's spirits lifted. Liu Xuejuan had woken up and was standing in front of the window looking outside. Her gaze was towards the ground, and her expression was a little worried. Luo Zhi had a little impulse to go up and hug her, but he restrained himself. After all, the two are still strangers who have just known each other for a day. A little embarrassed, Luo Zhi smiled at her. Liu Xuejuan didn't respond with a smile, her brows locked slightly.

"What's wrong?" Luo Zhi asked.

"Acid rain."

"What?" Luo Zhi's eyes rolled, and his mind began to become a little clearer. It's entirely possible. There may have been an explosion at the chemical plant to the northwest, and the spilled acidic material rose with the air current, mixed into the clouds, and fell down with the rainwater to form an acidic solution. Acid rain. Luo Zhi secretly blamed himself, there were too many things he hadn't thought of. In summer, the surface of the land is often southeasterly, but the air circulation will turn the wind direction back to the northwest at high altitude, bringing acid rain with them. Of course, the circulation is generally a large-area, higher-altitude concept, and there will be no strong circulation from here to more than 20 kilometers to the northwest.

But not to be taken lightly.

"How did you find out?"

"Look at the disabled passage downstairs, there are rust on the iron railings on both sides. Looks new. ”

Luo Zhi looked at Liu Xuejuan quickly. There was no panicked expression on her face, even worry was faint. Luo Zhi remembered that in the past two days, he didn't have time to ask what she did, and he didn't know what kind of person she was. But since she reluctantly accepted the reality of the situation, many of her performances are very calm and professional. This is not a mediocre woman.

"What do you think?" Luo Zhi asked.

"It doesn't matter for the time being, it's not too acidic." Liu Xuejuan's answer was as simple as ever.

Luo Zhi thought for a while: "Shall I go get some test strips to test?" ”

"No, the rain has passed. There is no smell in the air, it doesn't matter. Liu Xuejuan seemed to be lost in thought and replied casually.

Luo Zhi thought of some chemical pollution in the air. Burning, there may be dioxins, but this is smelly. Sulfur dioxide, hydrogen sulfide and chlorine also have odors. Methane, which is colorless and odorless, but too light to form low-altitude air pollution. Ozone, now that the sun is setting, the ultraviolet rays are decreasing, the temperature is dropping, and there will be no high concentrations of ozone. Carbon monoxide, a product of inadequate combustion, but it will be fine in an open space. Luo Zhi noticed that Liu Xuejuan had opened the floor-to-ceiling windows in her bedroom and the glass partition between the living room and the terrace, causing convection between the interior and exterior. He attaches more importance to her, and Liu Xuejuan will play a great role in the survival of the three of them. Luo Zhi was a little ashamed of his previous machismo.

After thinking about it for a while, he said: "I'll go and see the generator, the child will be afraid of the dark at night." Liu Xuejuan looked up at him, and there was a hint of subtlety in her eyes, which made Luo Zhi a little frightened.

Nothing was said, and both seemed to feel something. Luo Zhi walked out silently, he was now very relieved to leave Liu Xuejuan and Yu Guannan in the house temporarily.

The property management center in the community is a bit messy, with a table of paper piled up and some chairs leaning against the wall. Luo Zhi looked at it, and there were statements of property fees, registers for collecting water, electricity and gas bills, contracts and leaflets from insurance companies, and a few tickets to participate in last night's community theatrical performance. On one side of the wall, there are rows of makeshift hangers with red, green, and green costumes. Walking out of the back door, a small bungalow on the left side was the generator's room, Luo Zhi pushed the door in and turned on the light in the house. Two large UPS power supplies occupy half of the wall, one with the running light on and the other on standby. For nearly 30 hours, it turned out that this large UPS power supply was supplying power to the home. Luo Zhi checked it, and the diesel generator was not running, and the fuel gauge showed that there was only two-thirds of the fuel in it. It's too much of a difference, and tomorrow he's going to go out and find more diesel, and he has to keep the electricity in his house until he leaves here completely. According to the operation diagram on the wall, Luo Zhi switched the power supply to the second UPS, and started the generator to charge the first one. He was very careful not to let the generator charge the UPS while supplying power to the home, this is a very heavy and large machine, if there is something wrong with the current one, it is difficult to find another replacement.

Where to find more diesel? Luo Zhi thought about it. Suddenly, he jerked up, pulled his legs and ran towards the rented house. Come on! This thought filled Luo Zhi's mind. How can such an important thing be overlooked! Luo Zhi's body trembled due to fear and self-shame. Running to the sixth floor in one go, he was already out of breath.

"Let's go!" Luo Zhi hissed.

Liu Xuejuan was preparing dinner when she heard Luo Zhi's shout and was startled.

"What's wrong?" She asked tremblingly.

"Oil refinery, oil depot ......," Luo Zhi replied with a gasp. Come on! Don't take anything! ”

Liu Xuejuan's face became solemn, put down the food in her hand, pulled Yu Guannan and ran out of the room. Yu Guannan was frightened, the uncle and aunt in front of him seemed to be frightened by something, and the little boy was speechless in surprise. Luo Zhi picked him up and ran downstairs quickly. You can't delay for a second, you have to get away from here right away.

Throwing down the materials that had been collected for a day, the three of them jumped into the car, and Luo Zhi drove the Volkswagen Tiguan and rushed out of the gate of the community in a puff of smoke. He didn't explain it to Liu Xuejuan in detail, and his heart was still wrapped in fear and shame.

About seven or eight kilometers from here is home to the city's largest oil refinery and oil depot. Nearly thirty hours have passed since the disappearance of humanity, where an accident could happen at any time. In the event of an explosion in a huge oil depot complex, the shock wave will spread to an area of at least a few tens of square kilometers. A chain reaction ensues, carbon monoxide, carbon dioxide, sulphur dioxide, all kinds of toxic organic matter, as well as heat waves, dust, fires, ...... In 2005, the explosion of the oil depot in Bunsfield, England, destroyed countless houses and vehicles within a few kilometers, and a little farther away, all the glass was shattered, and even 40 kilometers away in London heard the loud explosion and saw billowing smoke, and the largest explosion caused a 2.4 magnitude earthquake. The British government immediately dispatched disaster relief personnel to extinguish the fire, clean up sewage and air, and deal with the aftermath. And now...... Luo Zhi shuddered again.

Liu Xuejuan comforted Yu Guannan softly in the back seat. Luo Zhi saw in the rearview mirror that her expression had returned to normal, but the tension in his heart did not subside at all. He deeply reproached his carelessness, and did not expect that the refinery and oil depot were close at hand. When he was at Liu Xuejuan's house, he only thought of the steel mills and chemical factories in Jiangbei, and forgot all about the dangers at his doorstep. Damn developers, created a beautiful villa community, how beautiful the publicity! "Eighty square kilometers without industry!" Luo Zhi gritted his teeth angrily. Eighty square kilometers, but his rented house is on the north side of these eighty square kilometers, and further north, is the source of the fire.

The car drove quickly across Xianlin Avenue, Luo Zhi slammed the steering wheel, and the Volkswagen Tiguan roared into Huanling Road. He quickly considered the next route, first went south, walked along Huanling Road to the southern foot of Purple Mountain, then turned east, took the Nanjing-Hangzhou Highway, got off Tangquan West Road, and went to Tangshan! It's a place of hot springs and forest farms, and there's really no dangerous industry there. Luo Zhi's first job in the city was as a waiter at a hot spring hotel in Tangshan, when he was not yet 18 years old. The boss only gave him a modest room and board and a monthly salary of only 500 yuan. But he was familiar with it. He had always thought that he was familiar with the university town, and there were many corners of the university town with his footprints. In order to enter the larger library nearby, he once asked someone to find a classmate at the Normal University, borrowed his library card, copied the front and back, and then cut out and pasted it on his campus card. He once wandered back and forth on the campus of one of the best and last universities in the university town, envious of the pride of the heavens, their beautiful campuses, their perfect library equipment, and their professors and tutors. However, he never thought of the oil refinery just a stone's throw away! He had been to Qixia Mountain by the river, and the thousand-year-old history and rich Buddhist culture had made him seem to be a little drunk, but he had never paid attention to the oil storage tanks at the foot of the mountain. Indeed, in normal times, these have nothing to do with him, and few outsiders will always worry about the safety of these oil tanks. But now it's different. Luo Zhi's heart calmed down, too many things happened too fast, and there would always be excessive and inconsiderate aspects of his thoughts. He didn't expect that the community only used UPS to supply electricity to his home for a day, and he also imagined the automatic control device of the generator set and power supply network. He didn't expect that there would be anyone in the library, but simply thought that it was Liu Xuejuan who he saw in the gap of the escalator yesterday. These may be trivial matters, but in the current situation, a trivial matter may kill you and the two people in the back seat.

Luo Zhi decided to have a good talk with Liu Xuejuan after he found a place to live, and he developed respect for her judgment and composure as usual. Indeed, in the past 30 hours, Liu Xuejuan has not made any major claims, and she has been busy back and forth with herself, but her age experience, knowledge structure, gentleness and affinity, and calmness that is different from many women make Luo Zhi feel very lucky. Of course, it is not yet known what will happen to Liu Xuejuan, and Luo Zhi does not want to consider whether his trust in her is well-founded or just because he has just fallen into panic and shame. He came back to his senses and drove well.

At this time, the sky in the north was illuminated by a red light, and the red light lit up one after another, and in just half a minute, a huge roar came into the ears, the glass windows shook, and the shock wave followed, and the grass on the side of the road was blown to the ground by the hot wind, and even the body of the car shook obviously. The smoke from the explosion site quickly rose into the air. Yu Guannan looked out of the car dumbfounded, and then fell into Liu Xuejuan's arms. Luo Zhi's forehead was covered with cold sweat.

It's just this one. Just now, if he watched the UPS fully charged, and then went back to eat a dinner prepared by Liu Xuejuan, the warm picture would be broken immediately. Instead, ear drums were shattered, shards of glass flew everywhere, and heat waves and smoke billowed in. Even if the trio were not fatally wounded, they fled the scene in horror with their burned skin and bleeding ears. There is a risk that the car will be overturned, and the only way to escape is on foot. It's just this one.

The light of the explosion flickered back and forth for more than ten minutes, and slowly turned dark red. At this time, Luo Zhi had already driven the car onto the Nanjing-Hangzhou Highway. There are a lot of jammed cars here, and Luo Zhi carefully walked around while looking at the sea of fire outside the left window. It will burn out, and more than half of the fuel in the city has been blown up. Once again, the god of luck protected them.

Tangshan is nearly 20 kilometers away from the explosion site in a straight line, and the heat wave has passed, and the nights here are still cool and pleasant. Luo Zhi parked his car in front of the Xiangzhang Huaping Hotel on Meiquan Road. This Indonesian-style spa hotel is well-equipped and luxuriously decorated. More than 20 villas are scattered in the courtyard, each with a private pool and hot spring bathing area in front of it. Luo Zhi found the floor plan of the hotel in the cabinet at the front desk, found the generator room according to the instructions, and started the generator. He looked at the fuel gauge, and both generators were filled with fuel. Walking out of the computer room, he went to the main control room and turned off all the unused power loads, leaving only the lighting.

The trio stayed in the villa closest to the hotel's doorstep. Liu Xuejuan took Yu Guannan and walked straight to a smaller room. Luo Zhi was waiting for her in the living room, he needed to talk to her, the pressure didn't matter, the huge change in lifestyle didn't matter, but he needed more opinions, a person was too small in front of nature, and it was not easy to survive alone in the city.