Cultivating immortals must not only conform to the way of heaven, but also go against the sky, therefore, when cultivating to a certain realm, there will be a heavenly tribulation, Lu Zheng himself also has an understanding of the heavenly tribulation, in his opinion, the so-called heavenly tribulation should be a change caused by the magnetic field emitted by the cultivator triggering a certain resonance of the cosmic magnetic field.

According to the records of the exercises, from mortal cultivation to immortal, it takes three heavenly tribulations.

One is the 39th Heavenly Tribulation.

The second is the Sixty-Nine Heavenly Tribulation.

The third is the Ninety-Nine Heavenly Tribulation.

And Lu Zheng sensed that what was coming was the 39 Heavenly Tribulation, which is the so-called Jindan Tribulation, for the Heavenly Tribulation, the immortal cultivators had an instinctive fear, because this was a test of life and death, and it was natural to get through, and if you couldn't get through, you could only scatter your soul, it is said that the success rate of the 39 Heavenly Tribulation is not more than 50 percent, the 69 Heavenly Tribulation is not more than 30 percent, and the success rate of the 99 Heavenly Tribulation is less than 10 percent.

When he first had the Heavenly Tribulation Induction, Lu Zheng also had a little fear in his heart, but he was quickly dispelled by his strong self-confidence.

There is a detailed description of the three nine heavenly tribulations in the "Great Five Elements Transformation Divine Formula", which divides thunder, wind and fire into three tribulations.

The thunder is the nine heavenly thunders, the wind is the nine yin tribulation winds, and the fire is the heart fire, which are respectively aimed at the cultivator's body, soul and state of mind, in fact, the heavenly tribulation is not a gift for the cultivator.

Walking out of the Divine Domain, Lu Zheng planned to talk to Xuan Xianzi, after all, he was a person who had survived a catastrophe, and he should be able to get some experience from him.

Seeing Lu Zheng, Fairy Xuan's attitude was very enthusiastic, and he even took out the good wine he had treasured for many years, after all, the gift that Lu Zheng gave him was too heavy, and the five-grade magic weapon could at least increase his combat effectiveness by two percent.

"Master, I sensed that my Heavenly Tribulation was coming, so I came here to ask for advice. Lu Zheng said in a sincere tone.

Hearing the name of "Heavenly Tribulation", even though Fairy Xuan had spent many years, he still couldn't help but change his complexion, recalling the scene of the nine deaths back then, he couldn't help but shudder, silent life, battle, and entertainment The four major areas, which area do you want to visit first?" Xiao Fei asked while introducing Lu Zheng.

"Let's go to the main control area first. Lu Zheng thought for a while.

"Okay, master. Under the guidance of Xiao Fei, Lu Zheng came to an operation room full of science fiction.

Xiao Fei continued: "This B-class battleship has a total of three combat systems, one is the mecha corps. Speaking of which, a three-dimensional light screen appeared in the operation room, and the place displayed on the screen should be the mecha storage warehouse, and a hundred huge mecha about six meters high were standing quietly inside.

"The previous master, Dongxian, named them the Hundred Beast Mecha Regiment, of which fifty percent of the mecha can exert the strength of C+, forty percent of the mecha can exert the strength of B-, and the remaining one, that is, ten mechas, can exert the strength of B, but now the energy in their bodies has been exhausted, and if they want to continue to serve their masters, they have to replenish energy. ”

Listening to Xiao Fei's introduction, Lu Zheng looked at these hundred mecha seriously, no wonder Dongxian called them the Hundred Beast Mecha Regiment, because although they were humanoid, their heads were all beast-shaped.

When he heard Xiao Fei's introduction to the strength of the mecha, Lu Zheng's eyes lit up.

C+ is equivalent to the pinnacle of Jindan.

b - Equivalent to the early stage of the first infant.

b is equivalent to the middle stage of the first infant.

With these mecha alone, it shouldn't be difficult to dominate the earth.

"Xiao Fei, do the energy of these mechas also use spirit stones?" Lu Zheng asked.

"Yes, the spirit stone in the master's mouth is also a power stone, which is the universal energy source of the universe, and a high-grade spirit stone can support C+-level continuous mecha combat for about 200 hours, B-level mecha combat for 20 hours, and B-level mecha combat for two hours.

When Lu Zheng heard this, he felt that these mecha didn't consume too many spirit stones, but ordinary people really couldn't play it, after all, it was really difficult to find high-grade spirit stones on the earth.

"Xiao Fei, replenish their energy!" Lu Zheng waved his hand casually and took out a hundred high-grade spars.

"Yes!"

Suddenly, a door cracked open in a wall, and a two-meter-tall man with an ordinary face stepped out of it.

"No, he's not human!" Lu Zheng quickly discovered the anomaly.

"Master, he is an auxiliary robot in the battleship, specializing in serving the Hundred Beast Mecha Regiment, you just need to hand over the spirit stone to him. Xiao Fei explained.

"Renault has met the host. The robot man bent down and saluted Lu Zheng.

Lu Zheng nodded, handed over a hundred high-grade spirit stones to Renault, and soon, Renault's figure appeared in the warehouse where the mecha was stored, and put the spirit stones into the energy slot on the mecha's chest one by one.

"Master, do you want to test the strength of the mecha?" Xiao Fei asked.

Lu Zheng's heart moved, and he nodded: "You arrange it for me, I want to fight with all three levels of mecha once!"

"Okay master, Dumbo has given them the order to go to the combat zone and wait, and now, Dumbo is here to introduce you to the second weapon system. ”

The three-dimensional light screen changed for a while, and then, two specifications, hundreds of cannon barrels appeared in Lu Zheng's sight.

"Master, this is the photon cannon attack system, divided into main cannon and secondary artillery, of which there are twelve main cannons, two hundred and thirty-six secondary cannons, the destructive power of the main cannon is very strong, at most ten cannons can destroy the entire earth, however, the energy consumed is also extremely terrifying, each cannon needs to consume 50 high-grade spirit stones.

The power of the secondary cannon is also good, one robe can easily destroy a large city on the earth, and each cannon needs to consume five high-grade spirit stones. ”

Hearing Xiao Fei's introduction, Lu Zheng was excited and distressed, excited about the power of the main cannon and secondary cannon, and distressed about the spirit stones in his storage ring that were not consumed.