Chapter 467: The Designer's Confidence

```

...

The trio made their way straight to the twentieth floor.

Each floor here is actually very tall, equivalent to a skyscraper with a hundred stories, and the interior is quite spacious, about the size of ten stadiums, with a complicated structure.

Sometimes, finding the stairs to the higher floors can be a very time-consuming task, not to mention that each floor is soaked with various mutant specimens. These specimens could be considered the progenitors of those alien species outside, having evolved and transformed to a very advanced state, making it extremely difficult to deal with them.

Finally reaching the top floor, when the three wanted to pass through the metal corridor to reach Zone L, they were suddenly faced with a huge metal door full of numeric digits.

"Can this door be destroyed directly?" Wu Hen asked.