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Xia Li took Li Ang and his group to detour from the other direction to the Dragon Palace, and just at the moment when they left the Jilong Calde Square, a gentle female voice sounded from Li Ang's brain

"True heroes dare to face the deepest darkness, and true brave people dare to meet the most difficult challenges. "】

[Dear Traverser, congratulations on successfully triggering the Hidden Bounty Mission: Ring the First Death Knell for Nobility and Privilege. 】

[Mission requirements: Please choose from the three mission props provided by the system and use one of the three mission props provided by the system within 72 hours to kill at least one Draco.] 】

[Mission props: infrasonic bomb, air pressure sniper rifle, idea cutting knife].

[Infrasonic bomb: can instantly generate super infrasonic waves after the timer time expires, killing all carbon-based organisms within a radius of 500 meters. 】

[Air pressure sniper rifle: can hit the target within 1500 meters, the target will not feel anything at the moment of hit. ] The sniper can change the atmospheric pressure inside and outside the body of the hit target within 30 seconds of hit, and the difference between internal and external air pressure is up to 10,000Kpa. 】

[Mind cutting knife: After snapping his fingers, he can use his own spiritual mind to create a cutting knife and slash the target regardless of time and space. ] The stronger the user's mental intention, the greater the lethal power. 】

[Mission Success Reward: You can choose one of the Thunder Fruit, Transparent Fruit, and Renren Fruit, Phantom Beast Species, and Nika form.] 】

[Mission failure penalty: Your travel, experiences, and thoughts will be transmitted to the top 30 powerhouses in the world at the same time in the form of brain waves. 】

"Hahahaha~" Li Ang was ecstatic in his heart, "The system really wore a pair of pants with me, I wanted to kill Draco, the system handed me a knife, killed and gave a reward, it was really benevolent." "

"It really makes Lao Tzu feel physically and mentally happy."

"Which fruit do I choose? Hee-hee..."

Li Ang has always been more cautious when he is happy.

He gradually calmed his mood: "No, I have to think about the three knives given by the system." "

"In case I didn't choose well, didn't kill Draco, and didn't say anything about it, resulting in the failure of the mission, the consequences would be unimaginable."

"This mission can only be successful, not failed." After Li Ang secretly alerted himself in his heart, he began to ponder carefully:

"The three props of the system are infrasonic waves, air pressure and spiritual energy. Is it telling me that the secrets of the universe must be thought of in terms of energy, frequency and vibration? "

If the system were an individual, it would definitely be collapsed by Leon's leapfrogging thinking.

Li Ang thought a little, the killing principle of this "infrasonic bomb" is still very clear:

Sound waves with frequencies less than 20Hz (hertz) are called infrasonic waves.

Infrasound waves are not easily attenuated and are not easily absorbed by water and air.

Infrasound waves of certain frequencies are similar to or even the same as the vibration frequency of human organs, which is easy to resonate with human organs, which is very harmful to the human body and can cause death when dangerous.

"But the biggest problem is that this product is actually a time bomb." Li Ang calculated in the slightest, "Let's not talk about how I got this bomb to Draco, even if I get it right, I can't let Draco stay within 500 meters of damage." "

"This thing seems to be powerful, and there are too many uncontrollable factors, so let's not consider it for the time being."

Li Ang went on to study the "barometric sniper rifle." "

The human body can withstand up to 3 atmospheres.

Nitrogen is insoluble in blood under normal pressure, and nitrogen begins to dissolve in blood when the pressure reaches 3 atmospheres, and the solubility rises rapidly with the increase of pressure.

Because a lot of nitrogen is dissolved in the blood, the corresponding oxygen content decreases, and there is insufficient blood supply, which is difficult for people to bear for a long time, and eventually leads to death.

Now Draco is at the bottom of the sea, and his body is under greater pressure.

When they return to land, it takes a while to adjust and adapt, and the physical function at this time is often very poor.

Li Ang felt that as long as he succeeded in sniping at that time, and then adjusted the maximum difference in air pressure between their internal and external bodies to 10,000Kpa, Draco would definitely die.

Li Ang took the "air pressure sniper rifle" as one of the alternatives, and began to study the "idea cutting knife".

Leon thought the operation and concept of this thing felt very cool and safe.

But there are still uncontrollable places: the so-called "the stronger the spiritual idea, the greater the lethality" makes Li Ang feel extremely unreliable.

Because this thing has no specific reference and comparison, for example, mental power 500 can be killed, after 1000 can be killed in seconds.

There is no objective basis at all, and you can only rely on your own subjective analysis to gamble.

So Li Ang also gave up this.

Eventually, Leon rotated the "barometric sniper rifle".

At the moment when Li Ang's mind chosen, a countdown appeared in his mind:

02:23:59:59

"Sure enough, as I thought, the mission time is only 72 hours."

Li Ang came back from his thoughts, and his group had already arrived at Dragon Palace City unknowingly.

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