Seeing that Long Yuandong, He Dali, Xu Yue and others were fine, Jiang Mantian felt a little calm, and he was not polite, so he lit a few candles, picked up a stone, and squatted on the marble floor to densely draw calculation formulas.

Everyone didn't know what he meant, and gathered around Jiang Mantian, waiting for the following.

Jiang Mantian pondered for a long time, erased a few formulas, and quickly wrote out more symbolic equations.

After more than ten minutes, I finally saw him wipe his sweat, let out a long sigh, and stood up with a grim expression.

He Dali asked, "Teacher Jiang, are we going to spend the night here today?"

Jiang Mantian shook his head: "We can't stay here for a long time, we must rush to the Shifang warehouse as soon as possible." Everyone immediately packed up and set off five minutes later. ”

Long Yuandong knew something was wrong and asked, "Why are you in such a hurry?"

"Half a day, we still have half a day. If we can't retreat to a safe place within half a day, it will be really dangerous!" Jiang Mantian climbed up a cement pier, looked over, and thought about countermeasures.

"Why is it only half a day?" Xu Yuexiu frowned slightly and said, "Could it be the tide of the sea?"

Jiang Mantian glanced at Xu Yue appreciatively.

Xu Yue's heart trembled for no reason, and her eyes turned away.

"If I'm not mistaken, the eastern North Pacific near the Caribbean Sea, there was a violent earthquake at noon yesterday, and the earthquake caused a strong tsunami, according to preliminary estimates, the highest wave peak is 160 meters, the highest in history. The huge wave rushed all the way along the Tropic of Cancer at a speed of 230 meters per second, and after reaching the Philippine Sea, the wave speed and wave peak were weakened, and the remaining momentum extended to the northwest, passing through the East China Sea, the Yellow Sea, and the Bohai Sea in turn, and landed in Jincheng. Due to the gorge effect of Bohai Bay, the weakened waves will rise again, and the highest wave peak will exceed 90 meters, and the wave speed will exceed 200 meters per second!"

Jiang Mantian coughed lightly and said, "What is the concept of a 90-meter wave height? In recorded history, the world's largest tsunami was the 1960 Chilean earthquake and tsunami, with a wave speed of about 190 meters per second and a maximum wave of only 25 meters. The tsunami affected almost all the countries on the Pacific coast and was devastating and costly. What will the 25-meter wave look like if the 25-meter wave is noble and so, but what will the 90-meter wave look like? It is conceivable that the Yellow Sea and the Bohai Sea will become a land of Ze at that time. The only thing we are thankful for is that Yandu is a buffer in the two cities of Jincheng and Langfang, and when the waves come here, the power and speed have been greatly reduced, which gives us time and opportunity to react. ”

"The west, north and northeast of Yandu are surrounded by mountains, most of which are above 400 meters above sea level, and the waves are not submerged. But the southeast of Yandu is a large plain that is diagonally connected to the Bohai Sea, with an altitude of only 20 to 60 meters above sea level, and the waves are at least 20 to 30 meters high. After a maximum of twelve hours, the tide will come. That's why the beast tide happened just now. Beasts are alert, and for some dangers, they know about it earlier than we humans. They sense the scent of the sea breeze, so they rush into the northwest mountains as soon as possible to seek shelter from high altitudes. ”

He vigorously said: "In this way, we should also follow the path of the beast tide and retreat into the mountains!"

"Retreat into the mountains, those mutant beasts aren't all vegetarians. Compared with drowning, it is more nesty to let the beast divide the corpse and eat it. "Xu Yue has hated mammalian pets since she was a child, what cats and dogs, they have never been close.

He argued: "When you encounter a wild beast, it is not certain who will die or live. But if you drown in the sea, you will die and you will not be able to escape!"

"Don't argue between the two of you, let's move first, talk as we walk on the road. Jiang Mantian estimated that it was now eleven or twelve o'clock in the evening, that is, before twelve o'clock in the afternoon tomorrow, everyone must move to a safe place. Seeing that everyone was almost ready, he immediately ordered the team to march towards the Dragon Garden.

He Dali asked, "Shall we go to Shifang?"

"Yes. First go to paint the ruins of the stone ship in Longyuan, and you will gather a large army. If you have enough time, you will send a vanguard team to explore the way to Chengming Lake in Yiheyuan and lead the large army into the escape pod. If time does not allow, turn to the northwest and take refuge in Qianzhishan Forest Park for a while. The altitude over there is more than 100 meters, which is enough to avoid the impact of the waves. The key is that it is only eight or nine kilometers away from the Dragon Garden, and it only takes two or three hours to rush over, which is barely in time. ”

The Dragon Garden is located to the north of the University.

Follow the Shangguanzhen Street on the right side of the Goldba Gymnasium, go all the way to the north, turn left after the Second Palace Gate of the Dragon Garden, enter the winding path, walk hundreds of meters, and soon find the remains of the stone boat.

Jiang Mantian led the crowd to walk through the highway in the night, bumping and bumping, and he couldn't go fast at all. Not only because the scum was all over the ground after the earthquake and the roads were not smooth, but also because of the roars of sporadic zombies from time to time in the scrapped cars on the road. They could break out of their car cages at any moment and launch an unexpected attack on humans.

Lu Yan and others made a few torches and led the way in front of them.

Everyone was careful to avoid extraneous complications as much as possible.

The road under his feet had broken into pieces, and when he stepped on it, he raised his height and fell, making a dull popping sound.

In the cracks of the road, weeds grew wildly, but for a day and a night, they were knee-high. Fist-sized unknown beetles busily weave through the grass, searching for food.

The landscape trees on both sides of the highway are tall and strong, and the roots of the trees arch the surrounding cement into piles and crack countless large cracks.

Yandu, which has just passed a day after the earthquake, looks like a deserted city that no one has lived in for more than ten years.

In fact, there is only one stone boat pedestal left, and the water area where the base is located communicates with the Lihai Sea of the Dragon Garden.

Xu Shuqing and Tian Guangye led hundreds of people to arrive first, and set up camp along the stone boat ruins, according to the defensive formation, with their backs to the water.

Xu Shuqing relied on his vague memory, knocked around, and found the combat readiness warehouse hidden at the bottom of the stone boat. When the mechanism started, the hull of the stone boat shook violently, and suddenly drifted two meters from the shore!

The crowd was amazed.

However, seeing the original location of the stone ship ruins, from the depths of the water, a high platform with a length and width of about three meters rose out of thin air, and the high platform rose to two meters above the ground and stopped, and the metal wall on the shore side slowly settled down, revealing an alloy gate.

Xu Shuqing said a few words in front of the sensor, and the alloy gate gradually opened, revealing a dark entrance.

Xu Shuqing took a long breath, and a stone fell to the ground in his heart.

He has been worried that after the geomagnetic overturn, the door of electronic control will fail and cannot be opened, or it will be damaged by an earthquake. Nowadays, it seems that the electronic equipment of this gate was designed with special treatment in mind for the inversion of the magnetic pole and earthquakes.

When everyone suddenly saw the gate, they were hesitant and did not dare to trespass.

Xu Shuqing ordered everyone to wait outside and walked into the gate with Tian Guangye. There was a sound on the ground, and the alloy door closed again, and it turned out that there was an elevator inside.