He came to the safe house in the cave and waited quietly for the countdown to end.

In the rumbling sound.

In the cave, Yu Hong sat on the ground, staring at the wooden door that had not changed at all from twelve days ago.

He just wanted to take a closer look at how the black mark was strengthened.

And more importantly, he plans to seamlessly continue to strengthen other things so as not to waste the time of strengthening the black seal.

At this time, the wooden door, which had been painted yellow and black, was dancing with black numbers that only Yu Hong could see.

0 day 0 hour 1 minute.

At the last minute, there is only one last step left to completely complete the strengthening of the wooden door.

At this last minute, Yu Hong didn't even dare to blink, and carefully watched the final changes.

One second.

Ten seconds.

Twenty seconds.

Thirty seconds.

Snap.

Suddenly, Yu Hong's vision blurred for a moment.

When he regained consciousness, the wooden door had turned into a huge wooden door that was thicker and made of stricter materials.

The surface of the new wooden door has a delicate texture like water waves, and the ventilation openings are equipped with a thick metal mesh, which is fine and breathable.

There is also a special viewing window in the middle, where you can see the outside scenery.

The originally loose fixed connections between the wooden door and the cave have now been completely improved and turned into a large circle of dense screws. It just looks much stronger than before.

Yu Hong stood up, stepped forward, and touched the wooden door.

Boom, boom, boom.

He tapped it with his fingers. It was thick, hard and tough.

"It's not the same wood as before." He didn't expect that this enhancement would directly replace the original materials.

"A lot more material was added." Yu Hong touched the breathable mesh below. It was very thick. He then opened the inspection window above.

He stretched out his hand to touch the edge and found no burrs.

"sharp.!"

Thinking of this, he quickly looked at the surrounding walls.

His original plan was to strengthen the wooden door and the surrounding stone walls, but now because of the shortage of food, he planned to try to strengthen other things first.

"First of all, this."

Yu Hong withdrew his hand from stroking the door, returned to the stove, and picked up a piece of lizard jerky from the stove.

'Can food be fortified?'

This thought flashed through his mind.

immediately.

On the lizard meat jerky in my hand, a number quickly appeared on the surface: 3 o'clock.

‘Three hours?’ Yu Hong thought about it in his mind. Then he stuffed the dried meat back and picked up the whole bag of dried meat.

'What now?'

Outside the bag, new numbers slowly appeared: 8:04 on the 1st.

The numbers are round and zero, quite accurate.

"Let's see the effect." Yu Hong immediately confirmed the intensified inquiry voice.

He could bear it for more than a day.
Chapter completed!