The moment the fire fold was pulled out, a string of rumbling firelight was raised, cutting through the darkness and dazzling.

However, Bi Xia did not lose time to appreciate it, and the moment the fire fold was released, she turned around and ran towards the entrance of the cave.

Rumble!

The biogas was detonated, the temperature in the bat cave soared instantly, and the fire was raging, and Bi Xia was still three meters away from the exit, and was swept away by the impact of the biogas explosion.

Luckily, Bi Xia reacted quickly enough and adjusted her body in mid-air, otherwise she would have broken her neck by now.

However, the price paid is not small.

The back, which was already burned to a bloody pulp, was even more painful after rolling around on the ground, and the slightest movement could involve a back injury, and even breathing was painful.

"Shhhh

Cold sweat spread all over Bi Xia's forehead, and she sat up with her hands on the ground to support her body, the glint in her eyes was even hotter and brighter than the sea of fire burning in the cave.

"The power of this methane explosion is so powerful!" Bi Xia hid in the grass, looking at the bat cave that turned into a sea of fire in front of him, and was surprised and delighted by the power of the detonation.

In Bi Xia's cognition, none of the spells in the Qi Condensation Period could achieve such power, and this kind of explosion could only be compared to a technique such as the 'Flame Explosion Technique' that could only be cultivated in the Foundation Building Period.

"Black Powder ......," Bi Xia muttered, she had previously been skeptical of the so-called 'explosives' in the memories of the Traveling Woman, thinking that it was too exaggerated and unrealistic for her memory that a finger-thick detonator could blow up an adult man's intestines and stomach, so she wanted to collect materials and give it a try.

Unexpectedly, this biogas explosion verified everything, and the things in the memories of the crossing woman were credible!

Bi Xia's heart was on fire, and the pounding rhythm made her uncontrollable.

Charcoal, nitrate, and sulfur, three simple materials that can make a rough version of black powder, if it can't be 'purified', the quality is not enough to make up the quantity, and she has a way to reclaim her spirit inducing jade card.

Bi Xia twisted her fingers, the dark yellow crystals she had just seen in the narrow slit in the bat cave should be saltpeter ore, charcoal is good, and the remaining sulfur ......

The map of Tianlang's secret realm flashed in his mind, and a smile rose on the corner of Bi Xia's mouth, "Sulfur Spring, hot spring?"

Enduring the hot pain in his back, Bi Xia raised his hand to wipe off the sweat stains on his eyes, and stared at the direction of the bat cave.

The corners of Bi Xia's mouth with a shallow smile lifted a wisp of arc, and there was a piercing chill in his eyes.

She hid in the grass to meditate and recover her spiritual power, until the sea of fire gradually extinguished before withdrawing from the cultivation state, after careful observation, she found a cloth towel to gather water to wet it with the 'condensation technique', then covered her mouth and nose, lifted her short sword and walked towards the smoking bat cave.

After a big explosion, the smell inside the bat cave became even more pungent and unpleasant, the earth burned under your feet like a soldering iron, and from time to time tongues of fire burst out of the ground, crackling and rolling into thick black smoke.

Bi Xia's eyes narrowed, and after quickly scavenging a large amount of saltpeter in the cave, he squatted on the ground in the billowing smoke and touched the corpse.

The black-clothed brothers did not turn to ashes as she thought, but they were also blown apart and charred, one of the two storage bags was burned, scattering broken porcelain slag, and the other storage bag was hidden in her arms, although it was tattered but it was always good.

Moreover, she also found the Tianlang fruit in a bloody severed hand.

"Why has the color changed?" Bi Xia pulled out the Tianlang fruit, and the original green fruit was now covered with a layer of red.

She was pretty sure that the Tianlang fruit in her hand was the one she had thrown out earlier, but why did the color change from emerald green to bright red after a fire, was it because of the fire or because of ...... Blood?

The reason for this is that Bi Xia didn't have time to think about it, the smoke here was too thick, and she couldn't hold her breath anymore.

It is imperative to get out of this place quickly.

Stuffing the Tianlang fruit and saltpeter into the storage bag, Bi Xia ran the bucket and turned the stars to leave quickly from the cave, and galloped all the way to the hot spring in the north.

She remembered that there weren't any Tianlang fruits around, and she thought it should be a safe place.

......

When Bi Xia obtained the first Tianlang Fruit, Bi Rao and the others also found the first Tianlang Fruit by the mountain stream hundreds of miles away from the small valley according to the map drawn by Bi Xia.

It's just that the color of this Tianlang fruit is exactly the same as the color that Bi Xia first saw in the bat cave, and it is all turquoise and emerald, which is extremely eye-catching.

The three of them looked at each other, and they were dumbfounded when they saw such a color of Tianlang fruit.

"Little Thirteen, what do you think?" Bi Yuan couldn't make up his mind, if it was because of the color difference, it would be unwilling for him to let him give up this Tianlang fruit.

"That's right, Thirteenth Sister, look at the color of the Langguo this day, could it be that it is not yet ripe?" Bi Hui asked eagerly.

Bi Rao pinched her eyebrows tightly and frowned lightly, her eyes were delicate on the Tianlang fruit, and the emerald green reflected in her eyes.

"Thirteenth sister, what do you see?"

Bi Rao shook her head and groaned: "Ninth brother, twelfth sister, although the color is different from the map, but-"

Bi Rao was stunned, Bi Yuan and Bi Hui were even more anxious, their throats and eyes were on fire, "But what? Little Thirteen, you said it!"

"Let's pick it, this is not too hidden place, maybe someone will find it soon, instead of struggling with the color of the fruit here, we might as well take it and find another one." Bi Rao said.

"Okay, then according to what we have discussed before, I will pick the first Tianlang fruit first. ”

Bi Yuan strode forward, picked the Tianlang fruit and put it in his storage bag, seeing him do this, Bi Hui and Bi Rao's eyes flashed, but they didn't say anything.

Their small group had already discussed it before they came in, and when the time came, they would decide who would take Tianlang fruit first according to their seniority.

According to the picking order, Bi Yuan was the first, Bi Hui was the second, and the last was Bi Rao's turn.

Now the Tianlang fruit picked by Bi Yuan is not ripe, which makes the most eager and reckless Bi Hui start to worry uncontrollably, "According to the results of our discussion, this first Tianlang fruit has been picked by the ninth brother, and the next Tianlang fruit will be me in order, right." ”

Bi Hui was not in a questioning tone, but in stating the facts, and Bi Yuan and Bi Rao naturally understood the meaning of her words.

"Little Twelve, I am very worried about my brother, but my brother is more faithful to his promise than a gentleman, since I am the first to pick Tianlang fruit, then the second Tianlang fruit is naturally yours. ”

Bi Rao smiled charmingly, "Twelfth sister, look at what worries you, even if I rob anyone's Tianlang Fruit, I will definitely not make a move on you." "Of course, if it's a red celestial fruit, that's a different story.

Bi Yuan's Tianlang fruit is immature, and Bi Hui is worried that Bi Yuan regrets not admitting it, if the second one is ripe, Bi Yuan will compete with her at that time, and if Bi Rao, who ranks last, can't meet the third Tianlang fruit, then everyone is afraid that they will fight in order to get out of the Tianlang Secret Realm.

Now that the two of them have expressed their attitudes, Bi Hui immediately laughed with a smile, "Ouch, look at what you said." I'm just talking about it casually, but since you've all said so, the second Tianlang fruit is mine. ”

"It's not good to stay here for a long time, let's leave quickly and look for the second Tianlang fruit. Bi Yuan said in a deep voice.

"Okay, let's go!" Bi Hui and Bi Rao shouted in unison, quickly moving towards the next location.