They carefully observed the feeding habits of the young fish and continuously adjusted the feed ratio and feeding frequency based on the observation results.

Start by feeding once every two hours, then gradually adjust to once every four hours, and gradually increase the amount of food you feed each time.

At first, the water quality in the breeding circle was relatively clear.

But now the temperature is very suitable, and after a week, algae and plankton in the breeding area will gradually grow.

Half a month later, the sea water gradually turned a natural light green, like a miniature marine ecosystem.

This tiny change made everyone excited.

Especially the scientific researchers and fish farming group.

This shows that their efforts have finally paid off.

Their carefully formulated fortified feed and improved breeding environment have begun to show results.

"The mortality rate has dropped!" Lao Wang excitedly reported to Captain Shang. "We used to have over ten juvenile fish dying every day, but now it's only two or three. Furthermore, most of the dead juveniles were weak and sickly."

Captain Shang showed a relieved smile on his face.

However, the challenges are not over.

They face not only the problem of the survival of the young fish, but also the security of food sources.

They have to make sure there is enough algae and plankton to sustain the growth of the juvenile fish.

Therefore, they need to continue to improve the bait cultivation system, constantly optimize the cultivation methods of algae and plankton, and strive to make this small ecosystem more complete.

In addition to everyone working together to restore the fish ecosystem, the mother ship also dispatches ships every day to purify the surrounding sea environment.

The fish carcasses are collected and burned in an incinerator.

Just when everyone thought that life was gradually getting back on track, another accident happened.

That was a month after the marine fish farming, and everyone was happy about the decreasing mortality rate of young fish.

Zhou Shuwan also became completely free.

That day, the sea breeze carried a faint salty smell and blew across the deck. She and Qi Mingyu were strolling leisurely on the deck of the mothership.

Although the day never goes down after it comes, people prefer the sunny day to the dark.

So, people are generally in a good mood.

There are also many people coming out for a walk or to bask in the sun.

The mothership does not impose any restrictions on this.

"I heard from the fish farming team that the mortality rate of young fish has dropped to 15% now," Qi Mingyu said slowly. "Team Leader Wang said that in two months, the first batch of fry will be grown."

Zhou Shuwan was very happy: "That's great. Although we currently have whale meat as a food reserve, it would be best to have more sources of fish meat."

Most of the whale meat inventory on the mother ship is in her space, so there is no need to worry about damage.

But people always prepare for danger in times of peace.

If we only rely on the whale meat we caught before and have no other food sources, one day the food will be consumed.

Now that seawater fish farming can be systematized, people's hearts can be at peace.

This is a rare peace in the end times.

"I just don't know how long it will take to revive this entire ecosystem?" Zhou Shuwan smiled and turned to look at Qi Mingyu, but was suddenly dazzled by a strange light.

She subconsciously looked up—and for a moment, her breathing stopped.

The clouds above were no longer the usual gray or lead blue, but were covered with fine ice crystals, as if someone had crushed the entire starry sky and scattered it across the sky.

Those ice crystals are irregularly shaped, and under the refraction of the midday sunlight, they emit light bands ranging from indigo to silver. As they flow, they seem to have life, slowly stretching out in the clouds.

The light fell on the sea, reflecting thousands of tiny spots of light. Even the railings on the mothership's deck were dyed a translucent silver.

"Oh my God...what is this?" Someone on the other side of the deck exclaimed softly.

The scientific researchers who were originally inspecting the fishing nets, the people patrolling on the deck, the people taking a leisurely stroll, and even the children who had a brief moment to play, all looked up, their eyes filled with shock.

Zhou Shuwan was also stunned.

She had seen the darkness of the eternal night, the paleness of the ice field, and the turbidity of the tsunami, but she had never seen such a brilliant sight.

The entire sky seemed to be covered with broken crystals. When the wind blew, the ice crystals trembled slightly, and the falling light dust landed on the face, bringing a refreshing touch.

In a trance, the broken ice crystals seemed to be rearranging themselves, sometimes gathering into a shimmering "crystal curtain", sometimes spreading out into stars in the sky. Even the salty and fishy smell in the air seemed to be diluted a little.

The exclamations from the crowd grew louder and louder, attracting those who were originally in the cabin to come out to watch.

Qi Mingyu's brows were tightly furrowed, and his originally relaxed body was tensed straight.

His eyes were fixed on the ice crystals in the sky. There was no trace of wonder in his eyes, only an unwavering vigilance: "Something is wrong. These broken ice crystals look like ice spikes..."

Zhou Shuwan's heart sank.

Before she could ask, Qi Mingyu suddenly dragged her towards the cabin, shouting heartbreakingly, "Get out of the way! Everyone, get out of the way! Get into the cabin! Quick!"

His voice exploded on the deck like thunder, and the originally amazed crowd was stunned for a moment.

Some people looked at him blankly, not reacting to this sudden change.

"Don't just stand there! Danger is coming!" Qi Mingyu shouted again.

The survival instinct of many years in the apocalypse allowed some people to react instantly.

They dropped the tools in their hands, picked up their children, and followed Qi Mingyu to the cabin entrance.

The originally leisurely deck suddenly became a mess. The sounds of footsteps, shouts, and children crying mixed together, forming a strange contrast with the dazzling ice crystals in the sky.

"Hurry! Faster!" Qi Mingyu pulled Zhou Shuwan and almost ran on the deck.

The hatch was just ahead, and quite a few people were already crowded there, trying desperately to get in.

Zhou Shuwan's heart was beating wildly.

At this moment, not only she, but everyone else could feel the light in the sky getting brighter and brighter, as if some danger was approaching rapidly.

At this moment, a scream suddenly came from the crowd: "Oh my God!"

Zhou Shuwan looked up suddenly.

The broken ice crystals that were floating in the clouds just now were suddenly pulled down by an invisible hand, and thousands of cold rays of light instantly tore through the sky.

First, one or two slender ice spikes fell, brushing past the mast with a sharp "whoosh" sound.

Then, the entire sky seemed to have burst its banks, and countless icy spikes fell like a rain of silver arrows, densely covering the entire view and even blocking out some of the sunlight.

"Get into the cabin quickly!" Qi Mingyu roared and pushed Zhou Shuwan into the cabin with force.

She staggered in and when she looked back, she saw a half-meter-long icicle hit the deck with a "bang", piercing the deck directly. The icicle stood there, shaking slightly.

"Ah——!" A shrill scream was heard on the deck.

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