Luo Hua and the others speculated that the people in Lin Ancheng who had a strange disease might have been poisoned by some kind of Gu poison, and according to the clues provided by Liu Qiren, Kuang Hai and Feng Ke, they decided to go to the Baoantang Pharmacy in Beicheng to investigate to see if there was anything wrong with the pharmacy.

"Second Prince Xuan, the current situation is roughly like this, although this giant mountain is also a person who practices martial arts, but with you as a master, it also makes us feel at ease. Zhang Moyou sent the others, leaving only Xuan Ming and the second son, and then Zhang Moyou took a few people to the medical hall and explained the situation and speculation of the previous investigation to this Xuan Ming.

If there is really someone operating behind the scenes, this makes the courage quite a lot, presumably there must be some evil intentions hidden in the capital, daring to make trouble in the capital. Xuan Ming Jian raised his eyebrows, feeling that the possibility of Gu poison was indeed very high, and it must not be done by one person behind this.

"Alas, it's just that this Gu poison has been attacking for some time, if we don't solve this matter as soon as possible, presumably the infection of this Gu poison will spread, and then the people of Li will be miserable. Zhang Moyou shook his head, according to the rapid spread of the strange disease in the past few days, if it is not stopped, this strange disease will definitely bring heavy damage to the capital.

Then Luo Hua and Xuan Ming rushed to the Baoantang pharmacy in Beicheng together, in order not to startle the snake, Zhang Moyou and Xuan Ming secretly hidden, only Xuan Ming entered the pharmacy and said that he wanted to buy medicinal materials.

"Shopkeeper, how do you sell the medicinal materials here?" Luo Hua came to the store and saw that there were not many people buying medicine, so at this time, the second child in the store and the shopkeeper were bored, and some even dozed off on the table.

"Guest officer, the medicinal materials here are all at a uniform price in the capital, Tong Su is not bullied, this is the price book. The shopkeeper said and took a booklet to Luo Hua, and glanced at the junior second next to him.

Luo Hua asked and took the book, pretending to be looking at the prices of various medicinal materials inside, but in fact, he made a color towards the outside of the medicine shop, and the giant mountain followed Xiao Er to the back of the medicine store, secretly observing whether Xiao Er did anything when he was cooking tea for Luo Hua.

Jushan saw that Xiao Er picked up the kettle on the stove and began to brew tea, and when the tea was ready, he took out a white porcelain bottle from his arms and dripped something into the tea. Jushan thought that there was really something wrong with this Baoantang pharmacy, so he quietly went to the main entrance of the Baoantang pharmacy and pretended to pass by, but in fact, he handed Luo Hua a problematic look, and Luo Hua understood that their speculation and conjecture were true.

"Shopkeeper, the price of your family's medicinal herbs is really the same as other pharmacies, if I buy more medicinal herbs, it might be cheaper?" Luo Hua pretended to inquire and walked to the counter.

"Hahaha, this is natural, and it will be cheaper to take more. As the shopkeeper was talking, the little second brought the steaming tea.

"Presumably, the guest officer is also tired, please use tea. The shopkeeper took the tea and served it to Luo Hua with both hands.

Luo Hua took the teacup, pretended to drink tea, smelled the tea and asked, there was really an imperceptible smell inside, if it weren't for Luo Hua's five senses since he was a child, he would not be able to find the problems in the tea.

"Shopkeeper, this tea is really fragrant, where is this tea?" Luo Hua raised his head to drink tea, and suddenly with a shake of his hand, the teacup fell to the ground and shattered, and the tea splashed everywhere for a while.

"Alas, you're all right, guest officer. Seeing this, the shopkeeper hurriedly asked Xiao Er to clean up the teacup fragments on the ground, but Luo Hua took the opportunity to take a step back and beckoned outside, Xuan Ming entered the pharmacy in a few moments, and then closed the door of the pharmacy at a very fast speed.

"What are you doing here, in broad daylight, Lang Lang, you still want to rob but can't succeed. The shopkeeper shouted, and the group of juniors made it look like they were going to fight.

"Do you say it yourself, or do we say it for you?" Zhang Moyou said, touching his beard.

"Doctor Zhang, what are you doing here, could it be that there is something wrong with our medicine?" The shopkeeper saw that the person who spoke was actually the famous imperial court physician Zhang Moyou, and for a while he felt that there might be something wrong with his own medicinal materials.

Luo Hua and Xuan Ming looked at each other, and felt that the shopkeeper didn't look like there was a problem

The little er who was making tea next to him saw that everyone's attention was on the shopkeeper's body, and he wanted to run to the backyard of the pharmacy, but he hit his head on the giant mountain who had been guarding the back door for a long time, and the giant mountain subdued the little two in three or five clicks.

"Xiao Liuzi, what are you doing!" The shopkeeper saw that his guy seemed to have done something wrong, and felt that the problem might be with this little er.

Jushan groped in Xiao Er's arms for a while, and sure enough, he found a white porcelain bottle, Luo Hua took it and opened it and smelled it, and immediately frowned.

"This is really Gu poison. Luo Hua put the porcelain bottle on the cap, turned his head to look at the little er, and saw that he was just an ordinary little er's dress.

"Little Liuzi, where did this Gu poison come from?" Luo Hua walked up to the little Liuzi and asked.

"What kind of poison, I don't know. Xiao Liu Zi broke the jar and fell, and he didn't want to answer the question when he turned his head, and when Xuan Ming saw this, the long sword slashed the little Liu Zi's thigh.

"Ahh

"Come on, who instructed you to put Gu poison, and where is the Gu poison mother?" Zhang Moyou used an extremely stern tone, feeling that this little Liu Zi might just be a doer, and might not be the real source.

"A few days ago, a wave of people came to the capital, and they forcibly gave me Gu poison, saying that if I didn't listen to them, I would be bitten by Gu worms and die, and I had no choice but to put the Gu poison they gave me when everyone came to the pharmacy to buy medicinal materials. Xiao Liu Zi trembled, making people feel that Xuan Ming's knife just now made him feel like he was deflated.

Just as everyone was waiting for this little Liu Zi to continue to tell what happened, suddenly a hidden weapon flew in from outside the window and hit Xiao Liu Zi's forehead directly, this little Liu Zi was killed on the spot, Xuan Ming reacted instantly when he saw this, and chased him out at a very fast speed.

The shopkeeper next to him instantly rolled his eyes and fainted when he saw this, Luohua and a few people, you look at me, I look at you, I feel that they are getting closer and closer to the truth, and this little Liu Zi should be the only one in this Baoantang pharmacy, otherwise it should not be the only one who is killed, and the others are nothing.

"Alas, in this way, the clue will be broken, Jushan, you go with Xuan Er Gongzi, and you must arrest the person behind this. Senior Mo You, we have already gotten some of this Gu poison, let's study and study it when we go back, maybe there is any way to temporarily suppress this Gu poison. Luo Hua took the porcelain vase in his hand and frowned at the thinker.

Then Luo Hua and the others returned to the medical hall, Zhang Moyou and Luo Hua studied the ingredients of the bottle of Gu poison and the Gu worms in it, and did not return to their residence until dark.

"I didn't expect that we had just come to the capital and encountered such a thing. Li Shoujiang sighed heavily after speaking.

"Since we have encountered it, it is natural to have the ability to make a move. Luo Hua shook his head and sighed as well.

"I don't know how the second son of Xuan and Uncle Jushan have been tracked down. Su Shangyi saw that it was dark outside, and she didn't even see a trace of moonlight.

As he was talking, there was movement outside the room, and everyone listened carefully, and the door was opened, and sure enough, the giant mountain had returned.

"Uncle Jushan, what's wrong?" Luo Hua hurriedly stepped forward to ask about the situation.

"Alas, no one caught up, but Xuan Er Gongzi and I discovered a new situation. Jushan sighed, but then his brow furrowed.

"Oh, what do you say?" Jushan and Luo Hua sat together, Luo Hua felt that there should be some clues to this new situation, otherwise Uncle Jushan would not have stretched his brows.

"Xuan Er Gongzi said, the Gu worms of Gu poison are generally under the orders of the mother Gu worm, since we have Gu poison, maybe we can use this Gu poison to trace the location of the mother Gu worm. Jushan drank a cup of tea placed on the table, and carefully explained Xuanming's thoughts to Luo Hua.

"Well, it seems that it can be like this, and I will try this method when I go to the hospital tomorrow. Luo Hua nodded, thinking carefully that this method should be feasible.

Early in the morning of the second day, Luo Hua followed Jushan to the medical hall and talked to the old man Zhang Moyou about this method, although the old man Zhang Moyou had not been in contact with this kind of thing, but he felt that he could give it a try, and the son of Xuan Ming also appeared in the medical hall early in the morning.

"Prepare a deeper cup, then pour the Gu poison into it, and then drop some human blood should be able to let the Gu worms in these Gu poisons guide the direction. Xuan Ming saw that Luo Hua and Zhang Moyou were still thinking about how to determine the location of the female Gu worm through this Gu poison, and he told the method he found last night.

"Give it a try. Luo Hua said and took out a deep bowl from the side, it seemed that it should be boiled medicinal materials, Zhang Moyou poured some Gu poison into the deep bowl, Luo Hua just wanted to use a dagger to cut a knife on his palm but was stopped by Xuan Ming.

"I'll come. Xuan Ming said and took the dagger, wanting to cut a knife in the palm of his hand, but was stopped by the giant mountain.

"Second Master Xuan, how can I let you come, or I'll come. As he spoke, Jushan slashed his hand with a dagger that he didn't know where it was, and in an instant a stream of blood dripped into the deep bowl.

The deep bowl was held by Li Shoujiang, and everyone gathered around to take a look, and sure enough, they found that this Gu poison really began to activate when it touched the blood, and as the blood and Gu poison fused, these Gu worms converged in one direction of the deep bowl.

"It should be this direction, we should be able to find out where the female Gu worm is if we follow this direction. Luo Hua was a little excited, turned his head to look at Xuan Ming, and as a result, his eyes flashed when he met Xuan Ming's eyes.

"Let's go, time is pressing. Xuan Ming just said simply, then turned around and walked outside the Foreign Medicine Hall, and Luo Hua hurriedly followed.

"Senior Moyou doesn't have to go, presumably there is a lot of travel ahead, senior, you are still waiting for our good news. Luo Hua remembered and turned his head to look at Zhang Moyou, signaling that the old man Zhang Moyou was still resting, and that nothing went wrong because he was in a hurry.

When Old Man Zhang Moyou heard this, he had no choice but to shake his head and watch the few little guys hurriedly go in the direction guided by the Gu worms.

"Why is this direction so familiar?" Zhu Hailin looked at the surrounding street environment, and felt that it was the same as the direction he went to the Beicheng Security Hall yesterday, and Luo Hua also reacted, thinking that the mother Gu worm should be in the pharmacy.

A few people sat in a carriage, and it didn't take long for them to come to the vicinity of the security hall in Beicheng according to the guidance of the Gu worm, and a few people circled around the security hall a few times, and the direction of the Gu worm really kept pointing to the security hall pharmacy.

Xuan Ming forcibly broke the door of the pharmacy with a sword, but there was no one inside.

"How can there be no one here? This Gu worm's guidance should be not wrong. Luo Hua frowned, and looked down at the Gu worms in the deep bowl that were moving around at this time.

"Find out if there is any underground secret room here, these Gu worms are so active, presumably this female Gu worm must be here. Xuan Ming frowned, glanced down at the floor of the Baoan Tang Pharmacy, and felt that there might be some underground secret room or something underground.

Luo Hua and the others felt that there was such a possibility, so they began to look around for the entrance and exit of the underground secret room.

"Here!" Su Shangyi found a secret hidden in the wall behind the pharmacy in the security hall, the secret door was blocked by medicinal herbs, Su Shangyi wanted to move it and thought it would be heavy, but it was easy to move a bunch of medicinal herbs.

Luo Hua and a few people immediately rushed over when they heard this, and several people looked at each other, Luo Hua just wanted to step forward to open the secret door but was stopped by Xuan Ming.

"Wait, let me get some people to guard this place, and if anyone else can't let them run anymore. Xuan Ming blew a whistle as he spoke, and more than twenty masked black-clothed men appeared in front of everyone.

"Childe, what do you command? The masked man who took the lead bowed respectfully to Xuan Ming.

"Go get some people to surround this place, don't let people get out. Xuan Ming pointed to the secret door and motioned for them to guard this place.

"Yes, Childe. The masked man disappeared after saying that, and the other masked men hid in the shadows.

After waiting for about half a minute, sure enough, a team of more than 30 people from Kyoto Prefecture surrounded the security hall tightly, and Jushan went to carefully open the secret door, and sure enough, there was a staircase leading to the underground.

Originally, everyone thought that it should be dark and swarthy below, but Luo Hua saw that it was brightly lit below, and everything could be seen clearly.

"Let's go, it looks like there's still some activity down there. Luo Hua said and followed the giant mountain, carefully stepping on the stairs to the underground secret room, and everyone was light and did not make a sound.