When the quick-dry cement sealed the final gap of the exit, Yu Yuan showed an expression of relief.

"Finally blocked this exit completely!"

According to the quick-dry cement instructions, it would take at most one hour for the cement to completely harden.

By then, he just needed to place the blast-proof sandbags on top of the cement, plus use the truck tarpaulin at the bottom of the exit cover plate for waterproofing, so there shouldn't be any problems.

Grabbing his tools and heading back, the only passage outside the shelter's main door was already blocked by a 1.2-meter-high sandbag wall built with blast-proof sandbags. The waterproof cloth found at Wutong Apartments was wrapped around the outside of the blast-proof sandbags, providing waterproofing.

The corners of the wall and ground gaps on both front and back sides of the wall were filled with quick-dry cement, not only reinforcing the sandbag wall but also completely preventing any possibility of rainwater seepage.

Unlike the exit earlier, the quick-dry cement here had already hardened.

Yu Yuan kicked it twice with his foot - it was rock hard. The corners of his mouth lifted in a smile.

He then carefully inspected the gaps between the sandbag wall and the walls with his flashlight. Finding no issues, he finally climbed over the high sandbag wall and entered the shelter.

From yesterday afternoon until now, a full day and night of high-intensity running around without sleep had left Yu Yuan feeling extremely exhausted, but it was all worth it.

Of the two exits in the civil defense shelter level, one had been completely blocked by him. He just needed to wait for the quick-dry cement to harden and place the blast-proof sandbags on top.

All the blocking materials for the frequently used ladder exit were in place. Whenever needed, he could complete the exit blockage in less than half an hour.

And this was only Yu Yuan's first line of waterproof fortifications against the typhoon.

The second line of waterproof fortifications was naturally the high wall built with blast-proof sandbags in front of the passage. Even if rainwater seeped through both exits, this high wall could block the spread of rainwater.

The third line of waterproof fortifications was naturally the optimized 【Stainless Steel Waterproof Door】 in front of him.

【Security Level 2 - Stainless Steel Waterproof Door】

Quality: Excellent

Function: Security level +4, equipped with waterproof backflow prevention, corrosion resistance, penetration resistance, sound insulation, impact resistance, and locking effects.

This waterproof door not only had silicone waterproof strips around the frame but also had automatic water barriers installed at the bottom. The hinges and locks were completely unrecognizable from their previous state, all transformed into stainless steel material.

A waterproof slope was built at the doorway, and the seams between the door frame and walls were all treated with waterproof adhesive. As long as the door was tightly closed, all door gap silicone would automatically close and adhere, completely leak-proof, making waterproofing no problem.

Yu Yuan nodded slightly. The excellent quality 【Security】 could be considered the first optimized facility he had built.

He had done his best with these three lines of waterproof fortifications.

If there were any areas still lacking, it would only be that the shelter walls hadn't received waterproof treatment, but that wasn't a big issue.

Returning to the shelter and lying on the floor bedding, Yu Yuan felt sore all over. Even slightly stretching his legs and feet produced cracking sounds from his joints.

Facility construction in the shelter only required providing materials to complete construction in one step.

But blocking the civil defense shelter level exits and building the second waterproof wall were done by his own hands, brick by brick. Moving hundreds of blast-proof sandbags and applying quick-dry cement had long exhausted the last bit of his strength.

He didn't even bother to eat. Feeling sleepiness coming on, he only had time to set a 6 PM alarm on his positioning watch before falling into deep sleep.

Ding ling ling...

Yu Yuan felt an intense headache, as if he was trapped in endless darkness, just wanting to sink deeper.

So tired!

Really so tired!

Sleep!

I want to sleep!

But in the chaotic darkness, that ringing sound became increasingly clear, and his consciousness was gradually awakened in the darkness.

He struggled to open his eyes.

Looking at the soft candlelight in the shelter, Yu Yuan's mind was still somewhat fuzzy, only gradually clearing after three seconds.

"This is... the alarm I set..."

Turning off the alarm.

He felt his physical strength had recovered more than half. Although his body still felt hollowed out, it was much better.

Struggling to get up, he patted his cheeks to make himself more alert.

After lighting a cigarette, the spicy stimulation reaching his lungs finally restored some of his spirit.

The time was already 6:05 PM.

Quickly replenishing some food and water, Yu Yuan brought the hand-crank flashlight, cranked it for a while to generate power, then left the shelter to check the condition of the previously blocked exit.

Clang clang clang...

The back of the kukri knocked against the cement, producing crisp sounds.

A smile appeared in Yu Yuan's eyes. After nearly 4 hours of setting, the cement had completely hardened. He immediately evenly placed the prepared sandbags on the cement board, completely finishing the blocking of this exit.

Returning to the shelter, he checked and equipped the kukri, Glock 17 pistol, 20 spare rounds, alloy folding hand crossbow, and backpack one by one, ready to go.

There was about one hour left until the Thug Prison's ambush on the Black Shield Police Department.

His purpose this time was to fish in troubled waters and seize opportunities to gain advantages. Traveling light, keeping everything simple.

For this reason, he specifically cleared the goods listed on Taotao Hole and prepared another handful of green grass to feed that Cree Mountain sheep.

Patting the Cree Mountain sheep's head, Yu Yuan muttered to himself: "This is the final chance. Bless me to capture a woman in this operation! Then you'll be liberated."

Before leaving the shelter, Yu Yuan suddenly stopped, opened Taotao Hole, swiped a few times, and completed two transactions.

Spent 75 survival points to purchase stones ×10, wood ×5, plus long nails ×5 and steel ×1 from the shelter.

Then he began construction.

Thirty seconds later, a one-meter square fire pit appeared on the shelter floor. The fire pit was surrounded by stones, with wood in the middle, and a stainless steel tripod stood above the wood.

As long as he lit the wood, he could use the tripod to boil water, make soup, or... barbecue.

This was the new facility unlocked after completing 【Ventilation】 and 【Water Collector】 construction - 【Kitchen Level 1 - Fire Pit】

Function: Energy level +1, comfort level +1, hygiene level +1; when burning, shelter room temperature increases by 5°C, within two meters increases by 15°C; unlocks 【Food Production】

(Friendly reminder: Don't leave fire unattended, stay with fire when lit)

Delight showed in Yu Yuan's eyes - three +1 levels.

"Not easy! Finally can eat some hot food."

Thinking this, he blew out the candle flame and left the shelter.

————————

District 14's Golden Orchid Avenue was a famous commercial prosperous district in the eastern city. Before the wasteland era, countless luxury cars came and went here.

Especially the Landmark Hotel at the intersection of Golden Orchid Avenue and Waterside Street, which was once one of the most luxurious hotels in Green Forest City.

Countless wealthy people, politicians, chaebols, movie stars, socialites, royal family members, and gang leaders frequented this place. It was a symbol of status and position, as well as a threshold of class.

This was once the most beautiful scenic line in Green Forest City.

Unfortunately, now the Landmark Hotel was just a relatively iconic building among the wasteland city districts.

And at this moment, in a sewer at a corner beside Golden Orchid Avenue, Yu Yuan stood on a ladder, curled up, listening to sounds from outside.

With difficulty, he checked the time - 7:15 PM.

Fifteen minutes left until the conflict outbreak time mentioned in the intelligence...

Source: Webnovel.com, updated by lotustale.com