General Cheng subconsciously sent the pillow to the tip of his nose. When he smelled it, he did not smell anything on the pillow, as Ling Yu said, and it was clean and had no sweat stains at all.

"If this is not the pillow that Mrs. Cheng has slept with, or someone has changed the pillow!"

Ling Yu smiled coldly: "The pillow can be changed, but the mattress you put on cannot be changed!"

Ling Yu said that, then climbed onto the bed, opened the sheets above, revealing the mattress below.

Ling Yu pulled out a dagger from his waist and cut off a mattress.

She got out of bed and handed it to General Cheng. General Cheng saw that the white mattress had turned yellow and there were some sweat stains on it.

"General Cheng, come here!"

Ling Yu walked to the window and took out several glass bottles from the space, one of which had some potions.

Ling Yu soaked the cut mattress in the potion, and General Cheng saw that the potion slowly turned red.

"What does this mean?"

General Cheng asked in surprise.

"I prepared the potion and can show the toxins in the bedding. Mrs. Cheng is poisoned by lead. Lead can cause nervous system functions and organic lesions, which are specifically manifested as headache, dizziness, drowsiness, nausea, vomiting, etc."

"When the condition is serious, hallucinations, consciousness disorders, forgetfulness, brain hernia and other phenomena will occur. This is why some people say that Mrs. Cheng has a brain tumor!"

Ling Yu said in a deep voice: "I suspect someone added lead powder to Mrs. Cheng's pillow. It is estimated that General Cheng announced that Mrs. Cheng was poisoned when he came back. The poisoned person was worried that he would be found, so he changed to Mrs. Cheng's pillow!"

"But this person forgot that Mrs. Cheng had been exposed to lead powder for a long time, and her blood and sweat also contained lead elements. She changed her pillow, but forgot to change the mattress that was soaked in sweat!"

General Cheng was not a fool either. When he thought of Ling Yu asking about his aunts and children before entering the door, he asked with a gloomy face: "Do you suspect that it was one of my aunts who did it?"

Ling Yu's head: "Men have hatred and like to do things directly, while women like to poison, especially such patient chronic poison!"

"The grievances of wealthy families are just jealous and seeking a future for their son! General Cheng, you know your family better than me. If you follow this idea, you will easily find the poisoned person!"

General Cheng had only three sons, one legitimate son and two concubine sons.

He thought about the sudden change of face and asked anxiously: "Miss Xing, you just said that lead poisoning can cause headaches, dizziness, drowsiness, nausea, vomiting. Are there any other symptoms? For example, insomnia, nightmares, and weight loss?"

Ling Yu nodded: "There are indeed symptoms such as insomnia, anemia, abdominal cramps, liver and kidney damage in the middle of the poisoning period, which vary from person to person, and the symptoms are slightly different!"

General Cheng's face turned black, and that's what his eldest son Cheng Xu was like.

Before, General Cheng thought that he was weak and worried about his mother's condition, so he did not expect that Cheng Xu was also injured.

"This poisonous woman!"

General Cheng suddenly drew out the sword. Who would do this except Aunt Feng?

Did she think that if she killed her son, she would focus on cultivating two concubines?

General Cheng said that, he was about to rush out to kill Aunt Feng.

Ling Yu quickly shouted: "General Cheng, don't be impulsive! Most people can't imagine lead poisoning. You asked Bailihai and Vice President Dong to check on Mrs. Cheng before, but they didn't know about lead poisoning. She wouldn't admit it if you go to find Aunt Feng like this!"

"I have a plan to make her confess her guilt!"
Chapter completed!