Making you a son-in-law is not about making you conquer the world.

Lin Ping, a graduate of a proper medical school, immediately recognized the man's symptoms as poisoning, specifically barium ion poisoning.

In Lin Ping's knowledge, ancient poisons were incredibly diverse, but many were exaggerated. For example, Lin Ping didn't know what "red arsenic" was.

The most common poison in ancient times was arsenic, a substance containing arsenic. Because arsenic often contains sulfur impurities, it can react with metallic silver to produce a black substance, so silver needles were often used to test for poison in ancient times.

Barium ion poisoning was relatively rare in ancient times; at least Lin Ping had not seen any relevant historical materials.

"What makes you think you were poisoned by the food from Mingyue Tower?" Lin Ping asked coldly, roughly judging that the other party was deliberately causing trouble, but it did take some courage to gamble with his life.

Upon hearing this, the man panicked. He couldn't find any solid evidence, and of course, Lin Ping couldn't provide any evidence that the food at Mingyue Restaurant was not poisonous either. It was an ambiguous matter to begin with.

"Everyone, come and judge this! Mingyue Tower is bullying its customers! They poisoned my little brother and refuse to admit it!" The man sat on the ground and wailed, winning the sympathy of the onlookers.

"What exactly can cause barium ion poisoning?" Lin Ping's mind was filled with this question, but he didn't want to argue with this person.

"Coarse salt! That's right, coarse salt contains various impurities, which can easily cause barium ion poisoning!" Lin Ping had a flash of inspiration and connected this to a series of things.

"Since you say the food at Mingyue Tower is poisonous, then tell me what dishes you ordered yesterday?" Lin Ping asked coldly, not believing that these two had the means to dine at Mingyue Tower.

As expected, the two stammered and couldn't give a coherent explanation.

They had never been to Mingyue Tower before and did not know what dishes were served there. If they mentioned a dish that Mingyue Tower did not have, wouldn't they be giving themselves away?

"That's right, so tell me what dishes you ordered yesterday?" the viewers asked eagerly, naturally afraid of eating the same dishes as the other party.

"Your salt is poisonous; you'll get poisoned no matter what you eat," the burly man said loudly, as if he were certain that Mingyuelou's salt was the problem.

"As expected, he ate coarse salt!" Lin Ping already knew the whole story.

Upon hearing this, the onlookers were so frightened that they stumbled. If the salt was poisonous, they would all be poisoned, and they were all worried about their health, hoping that Lin Ping could give them an explanation.

"Don't panic, everyone, and don't worry about being poisoned." Lin Ping calmed everyone down first, and then Li Mingxuan brought out all the salt from the kitchen.

To convince everyone, Lin Ping specifically had several onlookers follow behind him to prevent them from switching the salt.

Mingyue Tower has a large daily customer flow, so they stocked up on a whole sack of salt, which was placed in front of everyone.

Lin Ping casually grabbed a handful and said seriously, "Since someone has falsely accused Mingyue Tower of having poisonous salt, I will personally let everyone try it."

After speaking, Lin Ping, in full view of everyone, stuffed salt into Li Mingxuan's mouth...

Tears streamed down Xiao Li's face, and his entire mouth felt numb. Luckily, Lin Ping had calculated the amount, preventing him from dying from the saltiness.

An incense stick's time has passed since Xiao Li swallowed the salt. Apart from drinking large amounts of water, he has not experienced any other discomfort, which indicates that the salt from Mingyue Tower is not the problem.

"That shouldn't be the case, how could there be no problem?" The burly man sitting on the ground kept muttering to himself, looking at Li Mingxuan with suspicion and only able to weakly refute, "He took the antidote beforehand."

"Antidote my ass." Lin Ping cursed inwardly, truly admiring this person's inconsistency. He had previously claimed that his younger brother had no antidote, but now he was saying that Li Mingxuan had taken the antidote.

Lin Ping walked up to the poisoned man, bent down, and said softly, "I know you are indeed poisoned by salt, but it's not from Mingyue Tower. If you can tell me who's behind it, I'll consider helping you detoxify."

The man's empty eyes blinked incessantly, as if he had seen a glimmer of hope to survive. He didn't want to risk his life for a few taels of silver, so he nodded vigorously.

Lin Ping whispered a few words in Li Mingxuan's ear, and the other party quickly brought over the useless Glauber's salt from the backyard.

"Just eat these saltpeter stones and then spit them out." Lin Ping smiled faintly, his face full of light and hope.

A dying person will grasp at even the smallest straw and swallow a handful of sodium sulfate powder without hesitation.

After swallowing Glauber's salt, the man's stomach began to churn violently, and he started vomiting uncontrollably, almost throwing up his intestines.

After vomiting, the person felt much better; the muscle spasms stopped, and even the pupils gradually returned to normal.

"Thank you so much, Your Highness, for saving my life!" The man knelt on the ground and kowtowed frantically before finally being able to speak.

"Amazing! The patient that the Bliss Hall couldn't save was saved by the Prince Consort. He's a miracle doctor!" Everyone smiled and kept giving Lin Ping a thumbs up.

With the miraculous doctor Lin Ping here, even if one is truly poisoned, it doesn't matter.

"Take these saltpeter stones home and remember to take them daily. You should be fully recovered in less than ten days," Lin Ping said very professionally. He had only helped the other person with acute poisoning, and there must still be residual poison in his body, which would require gradual treatment.

The man looked at Lin Ping gratefully and mustered his courage to say, "I did suffer from salt poisoning, but it wasn't from the salt at Mingyue Tower; it was from the salt he gave me!"

The burly man next to him immediately wilted, bowing his head and not daring to say another word, naturally knowing that the matter was about to be exposed.

"After I was poisoned, I went to the Pleasure Hall. The doctor there did indeed say there was no antidote, so I went home dejectedly to wait for death. At that moment, he reappeared, holding ten taels of silver, saying that I could get the money if I falsely accused Mingyue Tower." The thin man knelt on the ground, constantly blaming himself, "I knew there was no way to save him, and I wanted to leave some money for my wife and children, so I was bewitched and listened to him..."

Lin Ping expressed his understanding, saying that it is normal for a dying person to be unable to let go of his wife and children, but the most hateful person is the other one.

"I am innocent too. I bought this salt from someone else." The burly man also knelt on the ground and kowtowed.

Lin Ping believed the burly man's words. How could he possibly steal coarse salt from a rock salt mine with his abilities? He must have been misled by someone else.

"Speak, where did you buy the salt from, and who told you to frame Mingyue Tower?" Lin Ping asked sharply, his cold expression sending chills down one's spine.

He already knew the ins and outs of the matter, and even roughly guessed who was behind it all.

In fact, the coarse salt the other party was eating came from rock salt mines. However, Lin Ping would process the coarse salt into edible refined salt before selling it. The other party stole a lot of coarse salt when the miners weren't paying attention and then sold it directly.

The other party originally intended to make a fortune from this, but unexpectedly, problems arose from the food, with many people experiencing symptoms of poisoning. Thus, they came up with this plan to kill two birds with one stone.

First, they framed Mingyue Tower, then implicated the rock salt mine, since Mingyue Tower's salt came from the rock salt mine, thus implicating the City Lord's Mansion.

This move was insidious and vicious, but unfortunately, the other party did not expect that the crude salt from the rock salt mine would be reprocessed, and that the salt from Mingyue Tower was not poisonous at all.