Old Marquis Yining glanced at Uncle Su, then glanced at the first wife, Mrs. You, and then at his second son and his wife.

In addition to these four people, there are Jiang Si and his two siblings.

The girl said that the person who poisoned her was among these four people...

It couldn't be the second daughter-in-law. When A Ke passed away, the second daughter-in-law had not yet married into the family.

The old Marquis Yining's eyes wandered between his eldest son and his wife and his second son, his heart filled with sorrow.

Maybe it's just like a little girl playing pranks.

"Grandpa, let's go in and see grandma." Jiang Si said.

"princess--"

"Uncle, you guys should also go in and see grandma."

Uncle Su frowned: "This will disturb the old lady..."

Jiang Si suddenly smiled and said, "Of course not. How can we let the elders see with their own eyes that grandma has been poisoned?"

As soon as these words were spoken, everyone's expressions changed.

"Princess, what do you mean?" Uncle Su was shocked.

Old Marquis Yining took out his pipe and clenched it tightly.

He had never expected Jiang Si to be so direct.

While everyone was still in a daze, Jiang Si had already walked towards the inner room.

In the inner room, a maid was taking care of the sleeping old lady.

"Is the old lady sleeping soundly?" Jiang Si asked.

There was not a trace of smile on her face, and she had the aura of a princess.

The head maid suddenly felt the pressure and dared not say a word, but nodded lightly.

Old Marquis Yining and others walked in.

The head maid wanted to pay her respects but was driven out by the old Marquis Yining.

"Princess, how did you know that the old lady was poisoned? What kind of poison was it?" Uncle Su asked in a series of questions.

"Uncle, please be patient." Jiang Si walked to the bedside and looked carefully at the old lady's expression.

The old face had a strange blush, but the person was in a deep sleep.

This is often the case with people with heart failure. They may never wake up again after falling asleep.

"Knife." Jiang Si stretched out his hand.

Everyone looked at each other, while Jiang Zhan fumbled around his waist.

How small is a knife? A dagger?

Ah Man took out a palm-sized knife from his purse and handed it over calmly.

"A cotton handkerchief."

Ah Man took out a clean white handkerchief.

"A cup filled with water."

Ah Man touched his purse, turned his head and pouted, "Don't you have even a glass of water?"

Do you still expect her to take a glass of water out of her purse?

Everyone breathed a sigh of relief for some reason.

If this maid takes out something strange from her purse again, she will have to figure out what the master and servant usually do.

Second wife Xu handed over a glass of water.

Ah Man took it, held it in his hands and asked Jiang Si, "Princess, where do you put the water?"

"Just hold it." Jiang Si said as he gently grabbed the old lady's left hand, spun the knife in his palm, and slashed at the third finger.

Several people were shocked.

"Si girl, what are you doing!" Uncle Su tried to stop her with a sullen face.

The old Marquis of Yining watched as the old lady's fingertips quickly condensed into a drop of dirty blood, and dropped the pipe he had raised. He shouted, "Boss, don't bother a girl like that!"

Uncle Su paused.

"Ah Man, catch it with a cup of water."

A drop of dirty blood fell into the water cup, and as it spread, a faint fishy smell spread.

"What's that smell?" Uncle Su frowned slightly.

Several people stared at the glass of water with serious expressions.

I have never heard of a sick person's blood giving off a foul odor, but people who have been poisoned do have this problem...

So, Jiang doesn't seem to be talking nonsense?

As they were thinking about it, they didn't notice that Jiang Si flicked some powder into the wound on his fingertip.

Soon drops of dirty blood fell into the cup and slowly scattered around.

It was clearly an ordinary bloodletting, but the person who cut her finger to let the blood was a princess, a cousin who seemed to be aloof and taciturn; and the person whose blood was let out was the highest-ranking mistress in the mansion, and it was very likely that she was poisoned.

All these reasons combined make this situation look particularly strange.

Therefore, several people were attracted to stare at the old lady's bleeding fingers.

Suddenly, something squeezed out from the tip of my finger and fell into the cup.

The mass of something unfolded in the water, and it turned out to be a blood-red worm.

Several people's faces changed drastically.

"What is this?" Uncle Su Da and Uncle Su Er stepped forward together.

Old Marquis Yining pushed his two sons apart and came over to look closely at the bloodworms in the water.

The worm seemed to be absorbing water, and its abdomen became larger and larger, until it slowly swelled into a ball.

The amount of water in the cup is decreasing at a speed visible to the naked eye.

The ball-like insect was still expanding and was about to fill up the inner wall of the water cup.

The first wife, You, and the second wife, Xu, both covered their mouths with handkerchiefs, their eyes filled with fear and disgust.

Others looked surprised.

Everyone in the room was silent, staring at the greedy bug with bated breath.

If it drinks more, it will burst, right?

Just as this thought came to my mind, I heard a soft "plop" sound, and the insect turned into a layer of skin in the blink of an eye and slowly floated to the surface of the water.

The water in the cup soon stopped rippling.

The water is dead, the insects are dead too, and there is a faint fishy smell that stimulates people's senses.

"Ggh——" Second wife Xu couldn't help but gulp twice.

The old Marquis Yining pointed at the water cup and asked sharply, "Little girl, was it this bug that poisoned your grandmother?"

Jiang Si handed the knife to Ah Man and said calmly: "This insect itself is not poisonous, but after entering the human body, it will crawl along the meridians to the atrium, and then parasitize there and suck the blood of the heart for a living. Over time, people with this insect in their bodies will show symptoms of heart failure..."

"In other words, this bug is the culprit that caused the old lady to become seriously ill?" asked Uncle Su.

Jiang Si looked at Uncle Su and smiled, "Uncle is wrong."

Uncle Su frowned: "Isn't it?"

"Of course not." Jiang Si wiped his hands with a handkerchief and said meaningfully, "The culprit who caused my grandmother's serious illness is a human!"

The words were earth-shattering, giving people a chill, yet also like waking up from a dream.

Yes, such strange insects would not appear out of thin air. It must be a human who harmed the old lady.

"Who could have killed your grandmother?" asked old Marquis Yining in a stern voice.

Jiang Si looked at Uncle Su, then at Uncle Su II.

The two of them were frightened by her look.

"The person who harmed my grandmother must be among those present."

Uncle Su's face turned pale: "Princess, don't talk nonsense!"

Jiang Si didn't care about Uncle Su's attitude, and said slowly: "The worm needs to feed on the blood of the third finger of the left hand before entering the target's body, so it's very easy to find that person. Just look for someone with repeated cuts on the third finger of his left hand."

Since this could harm my grandmother and was related to my mother's death more than ten years ago, it is unlikely that the man would use servants to raise crickets.

The more people know, the harder it is to keep a secret.

"Uncle, uncle, aunt, please stretch out your left hands now."

"Why don't my sister-in-law need it?" The eldest wife, Mrs. You, suddenly asked.

Jiang Si looked at her and said with a half-smile, "Because when my mother passed away, my second aunt hadn't married yet."

Yu's expression changed slightly: "You mean——"

"I can talk to you later. Now please stretch out your hand, aunt."