Chapter 161: Cleaning up the Poison Pool

Without waiting for Chen Hongyuan, Zhang Zhixuan left the materials from the poisonous dragon to Zhang Sidao, and then returned to Lushan with the Qingni bottle.

As soon as he came back, he went to the Ten Thousand Snake Cave. At this time, after more than a year of transformation by the Zhang family monks, the Ten Thousand Snake Cave had already changed its appearance.

The cave of this mountain cave had already been widened by the Zhang family monks.

The depths of the cave can accommodate six people walking side by side at the same time. Every ten feet away, a torch was lit, illuminating the cave like daylight.

The rubble and the remains of snakes and insects in the cave had already been cleared away, and even the walls had been cleaned spotlessly.

Zhang Zhixuan came to the underground river and found that the clan leader was meditating and practicing by the river.

Seeing Zhang Zhixuan had returned, Zhang Leqian said with a smile: "Zhixuan is back. Did you have a smooth trip to Qingxuan Sect this time?"

"Thanks to the great blessing of the clan leader, I have lived up to everyone's expectations and retrieved the Qingni bottle from Aunt Hanyan."

"That's good. I have been worried for the past few days since you were away. If this poison pool under the waterfall is not dealt with, it will not only be a hidden danger, but we will also not be able to use the spiritual veins under the poison pool. Since you have the Qingni bottle in your hand, we can absorb the venom in the poison pool into the Qingni bottle, and then use the alchemy furnace to refine it into poison pills. Although the area of ​​this poison pool is not small, as long as the three of us take turns to cast spells, one day we will be able to drain all the poisonous water in the poison pool."

The Qingni bottle is a magic weapon that can absorb water-attributed venom.

This magic weapon is already a third-level intermediate product, mixed with some Kongming stones, and has the law of space. Although it is only the size of a palm, it has a three-zhang radius of space inside.

Although compared with the amount of venom in the poison pool, the three-zhang space is insignificant. However, as long as the cultivators continue to absorb the venom, it will probably take less than a year to completely drain the poison pool.

Zhang Zhixuan and the other two took turns using the Qingni bottle. Every time they used the Qingni bottle, they would absorb the venom in a three-zhang radius.

In order to consume the venom, the Zhang family refined a huge bronze tripod, poured the venom in the Qingni bottle into the tripod, and used Xuanyang wood to refine it into poison pills.

This bronze tripod was made of refined copper that had been refined for a hundred times. The grade was only the first-level middle grade, and the Zhang family could not produce Xuanyang wood. This expense alone cost more than 300 spirit stones.

Every day, Zhang Zhixuan and the other two had to use the Qingni bottle to absorb the venom 30 times. It took four months to completely drain the venom in the poison pool.

During these four months, the cultivators of the Zhang family went to Liucheng four times, bought a large amount of Xuanyang wood from the Zhu family, used the Cloud Beast to transport it, and spent countless manpower to refine the venom into black poison paste.

The cultivators in the Qi Refining Stage put on special protective gloves, held the best detoxification pills in their mouths, and squeezed the pieces of poison paste into pills.

These pills contain the venom of tens of thousands of extremely poisonous snakes. Without the use of precious detoxification elixirs, they cannot be detoxified at all.

In addition to keeping a portion of these poison pills for the family, Zhang Zhixuan plans to sell them on a large scale in Xihefang and Heishan, at least to earn back the price of the bronze tripod and Xuanyang wood.

After draining the venom from the poison pond, the remaining venomous snakes will be easier to deal with.

Although the poison pond was densely covered with a large number of venomous snakes, unfortunately, they were all burned to charcoal by the huge amount of wood thrown into it by the cultivators of the Zhang family.

When the fire was extinguished, the cultivators in the Qi Refining Stage of the family took the mortals to transport all the ashes and debris out of the cave.

Even the silt under the poison pond, because it was mixed with a large amount of highly toxic substances, was cleaned up, completely eliminating the hidden dangers.

In order to dig out these highly toxic silts, the family also lost dozens of mortal soldiers, and even the innate cultivators in Lushan County also lost two people.

After dealing with all the debris, Zhang Zhizai arranged a second-level spirit gathering array at the bottom of the poison pool and began to prepare to gather the spiritual energy in the dark river to facilitate the cultivation of the family cultivators.

After clearing the poison pool, Zhang Zhixuan opened the connection between the poison pool and the dark river a little and reintroduced the water source in the dark river into the poison pool.

This spiritual vein, in a dark environment where you can't see your hand in front of your finger, is somewhat similar to the cold dragon pool where the green dragon hid back then, and is very suitable for large-scale planting of Xuanyou grass.

Now planting Xuanyou grass has become a very important source of income for the Zhang family. Not only the pool where the patriarch recuperates, but also the well under Lingjing Mountain has planted some.

More than 20 years have passed, and Zhang Zhixuan has harvested three crops of the three Xuanyou grasses he brought back from Black Mountain that year, and now has expanded to more than 20 plants.

Unfortunately, the environment required for spiritual grass cultivation is very demanding. There is not much space left in the two water ponds suitable for growing Xuanyou grass. This time, the Wanshe Cave water pond was discovered. According to the spiritual energy intensity and area here, about 70 to 80 Xuanyou grass can be planted each time.

If all these 70 to 80 Xuanyou grasses are refined into Youhuan Dan, according to Zhang Zhixuan's current success rate in refining pills, about 500 Youhuan Dan can be refined.

Even if the number of Youhuan Dan increases on a large scale, the price has fallen to the same level as that of the Black Mountain.

The price of 50 bottles of Youhuan Dan is also about 6,000 spiritual stones. According to the average growth cycle of Xuanyou grass of 12 years, the annual income can be spread out to about 500 spiritual stones.

In another 12 years, the Xuanyou grass planted in the water pond under the Wanshe Cave will probably become a very important source of income for the family.

In addition, in the past year and a half, the patriarch has discovered a fish spiritual beast in this underground river.

This is a carp-like spiritual beast with red, yellow and white colors, called the three-color spiritual fish. This kind of monster occasionally appears in the dark river, and almost all of them have become food for poisonous dragons in the past.

Although its taste is far less delicious than the white-tailed reed fish of the Wu family, as long as you catch some and raise them, you can open a shop in Xihefang every year to sell them, and you can earn a few hard-earned spiritual stones.

After introducing the living water from the dark river, Zhang Zhixuan sent people to transplant a few Xuanyou grass plants under the pool. Then he and the clan leader found a way to catch some three-color spiritual fish and raise them in the middle of the pool.

In order to prevent the three-color spiritual fish from swimming along the dark river, Zhang Zhixuan and others also wove a magic fishing net at the mouth of the dark river.

After all the matters in the Ten Thousand Snake Cave were dealt with, it took the family almost a year and a half to mobilize the whole family.

At this time, outside the Ten Thousand Snake Cave, near the river, a small town had been built. Several thousand mortals had moved to the town, and a large amount of farmland had been reclaimed in the nearby valleys and plains.

The Ten Thousand Snake Cave is only about 700 to 800 miles away from Tiantai Peak, and a little further away from Lingjing Mountain, but no more than 1,000 miles away.

These three spiritual veins are like a triangle, enclosing all the nearby land.

The area within this triangle is the control area of ​​the Zhang family in Taicheng County. Within this area, the Zhang family cultivators can protect the safety of the family's mortals.

There is no third-level spiritual vein in the Ten Thousand Snake Cave, so there is no need for foundation-building cultivators to guard it for the time being. Zhang Zhixuan asked the eleventh uncle Zhang Menghong to take a few young people to guard the Ten Thousand Snake Cave.

After everything was settled, Zhang Zhixuan was ready to send the Qing Ni bottle back to Qingxuan Sect and give it to Han Yan.

He flew all the way for more than ten days before arriving at the gate of Qingxuan Sect. At this time, half a year had passed since the last time he went to Qingxuan Sect.

Zhang Zhixuan first sent the Qing Ni bottle to Han Yan, and then hurried back to Qingyang Market to find Chen Hongyuan.