Yu Wei and Jin Yu were also in the running queue.

Liu Kai led everyone around the community for five laps in front.

When they stopped, the women were drenched in sweat, the men's faces were red, and none of them did not gasp for breath.

Liu Kai walked out of the team and looked at the panting crowd with a slight frown.

"It seems that the big guys are not physically good, so let's warm up today, and everyone can move their muscles and bones freely."

Everyone breathed a sigh of relief when they heard this, and they really didn't have the strength to do it.

Liu Kai looked up at the big sun hanging high in the sky and wiped the sweat from his forehead.

"I'll run these laps today, and I'll start tomorrow, and the training time will be before sunrise in the morning, tentatively at half past five in the morning."

After speaking, he took out the drawing of the filter pool in his trouser pocket and raised it: "The big guy goes home to get the tools, dig out the filter pool today, and we will not be short of water to eat in the future." ”

Li Hongwei opened his mouth and panted, and when he heard Liu Kai's words, he hurriedly raised his head and shouted, "Captain Liu Kai, what is the filter pool?" Didn't we dig out the well? ”

Liu Xiangmei kept fanning her cheeks with both hands, and said, "Is it a pool that purifies the water source and filters impurities?" ”

Liu Kai waved his hands: "Everyone be quiet, listen to me, this filter pool is used to purify water quality, after it is done, let's introduce the water into the filter pool, and what comes out is the water that can be directly drunk." ”

When the big guy heard this, they grinned one after another, and anxiously told their families to hurry home and get tools.

After receiving the water and bread, most of the people did not leave, and stayed to see how to build the filter tank.

Liu Kai is also the first time, fortunately, there are drawings.

He asked the crowd to dig a mouth-shaped pool first.

The middle is separated by a wall to form a zigzag, and the wall is filled with activated carbon provided by Jinyu.

The height of the pool bottom on both sides of the wall is different, and there is a significant drop.

The upper side stores the freshly pumped water and uses it to add coagulant for sedimentation.

Then, the precipitated water is slowly injected into the lower side of the pool through the activated carbon wall to adsorb impurities.

A simple filter tank was built.

This pool was assigned a special person to supervise the operation, and it was completed within a day.

Liu Kai scooped a glass of water from the pool with a transparent water cup, observed it in the sunlight, and sniffed it again.

"The pool was built and the water no longer smells. However, to be on the safe side, be sure to boil it before drinking it in the future. ”

The crowd watching next to him cheered when they heard this.

Only Liu Xiangmei frowned and looked at Liu Kai and said: "Captain Liu, there has been a water and power outage, and the gas at home seems to be absent for the past two days, I feel that the gas will be cut off soon, what will I use to boil water for cooking in the future?" ”

Liu Kai frowned.

Because Jin Yuyu has always been the only one to cook with Tian Tian, he didn't think about the gas problem.

Now that I think about it, if the gas really goes out, it will be a big problem.

"Now I can only make do with this for the time being, I really lose my breath, and I can only make a fire in the future."

Liu Xiangmei sighed and stopped talking.

She actually knew that Liu Kai didn't have any good way, but she panicked without asking.

Now that she's confirmed her idea, she knows what to do.

She looked around at the decaying trees in the neighborhood, and it seemed that she was going to collect some branches to prepare.

At lunch, Liu Kai raised the issue of gas.

A room full of twenty people is not a good solution.

Everyone's eyes all looked at Jin Yu with a faint expectation in their eyes.

Jin Yu coughed dryly and said, "I don't have a good idea, if the gas is also interrupted, we will return to the original in the future, let's burn the fire, I have more gasoline and diesel in storage." ”

After a pause, she added: "There is a pile of coal in the backyard against the wall, enough to burn for a long time." ”