As for the reason why the spider mother didn't find Qi Lin......

"The Assasin spider has a poor sense of smell, sight and hearing, but its arthropods have special sensory organs that can easily sense vibrations from the ground and use it to determine the location of enemies or prey."

The eight arthropods of the spider mother are highly degraded, and due to their large size, these eight arthropods cannot touch the ground at all, let alone induce vibrations.

And the cave in the underground warehouse must be a ventilation hole in the brood.

Qi Lin didn't know if he was lucky or unlucky, the spider mother who happened to be in the spawning period, after losing those servant spiders as ears and eyes, was at best an oversized egg-laying machine, which was much easier than facing a whole group of spiders.

It's just that...... According to Qi Lin's knowledge of biology, generally this powerful female creature is always extraordinarily violent during the spawning period due to biological hormones and instincts, so the individual strength of the spider mother in front of her should be in the so-called "peak".

Right now...... What to do?

Kill this E-class boss?

Qi Lin looked at the hunting knife in his hand, the twenty-centimeter-long blade compared to the mountain-like body of the spider mother...... Qi Lin was reminded of an apt metaphor: the mouthparts of a mosquito and the shell of a turtle......

Even if he slashed at the vital point of the spider mother with every knife, the blade never entered the hilt, and it is estimated that it will not be able to penetrate the carapace and epidermis of the spider mother......

In the face of this creature, I am afraid that only large-caliber anti-materiel weapons or machine guns can break the defense, or the laser combat knife equipped on the Red Dragon Type 6 should be able to barely cope with it.

The spider mother didn't notice that a small human had slipped into her brood, and she was still lying on the corpse of the king spider that had mated with it not long ago - laying eggs requires a lot of energy from the spider mother, and the king spider, as an F-level boss, is undoubtedly a good nutritious meal.

The cruel laws of nature are so ruthless.

Qi Lin squatted down and took out four bottles of chemical reagents and two empty beakers from his backpack, he planned to spend half of the reagents to make a liquid bomb, only in this way, could he have the possibility of killing the spider mother.

Converted to the proportion of the spider mother's huge body, the carapace on its body must be at least seven to eight centimeters thick, and it is not impossible to even exceed ten centimeters.

Even if it is the weakness of the Assasin spider's waist and abdomen, the thickness of the carapace is not something that Qi Lin can break through with the only slight punch he carries - but at this time, the spider mother, in addition to the waist and abdomen, exposes another weakness.

A birth canal that is laying eggs!

Although the "Bao Ju" thing seems to be very immoral, if you can really send a bomb into the belly of the spider mother and explode, even if you can't let the spider mother die immediately, but dying is definitely inevitable.

The battle with the spider mother must be resolved quickly, otherwise once it falls into a stalemate, Qi Lin will fall into the siege of N king spiders and a steady stream of spider seas, and when the time comes, it will be really difficult to fly with wings.

Qi Lin was thinking about how to send the bomb into the spider mother's birth canal, which was constantly lining out spider eggs, and at the same time carefully pinched the reagent bottle - the equipment was rudimentary, and it was also a big test for Qi Lin to prepare nitroglycerin with quality and quantity in this situation.

……

"Obtain [Glyceryl Trinitrate 650ml] X1, a green quality item."

"[Glyceryl trinitrate], commonly known as 'nitroglycerin' or 'nitroglycerin', has a C3H5NO3O9 chemical formula, which is very easy to explode due to vibration, friction, open flame and high temperature, and is a dangerous chemical. At the same time, nitroglycerin is also a drug used to treat heart disease and has the effect of dilating blood vessels. ”

"Successfully make a large amount of [Glyceryl Trinitrate], and your [Chemistry] skill has been upgraded to the intermediate level!"

Qi Lin looked at the pale yellow thick liquid in the beaker and wiped the beads of sweat from his forehead - if he shook his hand and accidentally knocked over this cup, the power of the explosion would be enough to blow him to pieces.

However, then another question arises: how do you get this liquid bomb, as long as the shaking amplitude is slightly larger, it may be a catastrophe -

Qi Lin suddenly thought of Nobel, the founder of the highest honor award of mankind in the old era, nitroglycerin and safety explosives were all invented by him, and Nobel also gained a lot of wealth because of this.

At that time, nitroglycerin was used as an explosive, and its explosive properties also bothered everyone - both transportation and storage were unsafe, even Nobel's brother died in an explosion, and his father was also seriously injured.

But later, in an experiment, Nobel accidentally discovered that the nitroglycerin absorbed by diatomaceous earth was extremely stable, and after research, Nobel invented the "safety explosive", that is, the "Dana explosive".

However, where did Qi Lin go now to get diatomaceous earth or a substitute for diatomaceous earth?

His eyes swept around the cave, and then, Qi Lin's gaze slowly stayed on the "fungus blanket" that spread throughout the cave......

"Forget it, let's treat a dead horse as a live horse doctor......"

Qi Lin used a hunting knife to dig out a palm-sized fungus blanket on the cave wall, this substance is a bit like air-dried carrion, and a bit like a stinky sludge mixed with humus and excrement.

However, Qi Lin can't control so much now, and among all the materials at hand, only this fungus blanket is the closest in nature to diatomaceous earth.

Cautiously dripped some nitroglycerin on the truffle blanket, and with a flick of Qi Lin's hand, he threw the small piece of fungus blanket out-

With a slight "click", the fungus blanket fell to the ground a few meters away, and nothing happened.

Although I don't know what the specific composition of this fungus blanket is, it turns out that this material can really replace diatomaceous earth!

Qi Lin was shocked, and immediately dug down a large number of fungus blankets with a knife, cut them into small pieces, soaked them all in nitroglycerin, and then stuffed these fungus blankets soaked with nitroglycerin into an empty reagent bottle, plugged the cork, and then equipped with a detonator the thickness of a little thumb, a powerful "Dana bomb", and it was completed.

For the rest, as long as you send it into the body of the spider mother, Qi Lin will be considered done......