"This method came from Er Dan but was preserved by the Yun family. When I was searching through the ancient books, I knew that there were people who had discovered the cure for the Yun family's flesh and blood. It was one hundred years after the death of Tyrant that he only mentioned that Tyrant's descendant was left behind outside Er Dan." Duan Cheng Xuan nodded her head seriously.

Tyrant did not complete the last step, but it had sacrificed many lives.

Then, he mentioned that the Yun family's flesh and blood could cure illnesses. Back then, there was even a war. Later on, the Yun family was protected by the royal family, and they grew stronger and stronger.

"If Tyrant really did practice some sort of method and change his body, then it wouldn't be impossible for his descendants to have a different body."

"If that's the case, then this method of eternal life is even more likely to be true."

Duan Chengxuan raised an eyebrow and exchanged glances with Sang Ning, but the two of them revealed a gaze of disdain.

"If I were to use this method of longevity, it would only result in me being left alone." "Think about it, a man who will not die, who will be blinded by his power and wealth, who will want to kill him even if he has a son. In that case, he still didn't get anything."

"Senior is right." Duan Cheng Xuan nodded. "If it wasn't for you protecting mother and royal brother, I'm afraid my family of three wouldn't be able to survive in this world now. And now I still want you to …"

"No worries. I'm also here to see what kind of girl can make an unrepentant prodigal son like you learn how to turn back." Sang Ning laughed as he stood up and said in a low voice, "That girl doesn't like you being by her side. I'll follow her every inch of the way these days."

At the mention of Gu Daiyan, Duan Chengxuan could only nod his head in compromise.

After leaving Duan Chengxuan's study, Sang Ning pretended to be displeased as he walked into Gu Danyan's room. The situation was strange, as there was a hidden force searching everywhere, so he naturally wouldn't let Gu Danyan rest by himself. He sat on the table, separated by two layers of heavy curtains, and saw two maidservants carrying books as they greeted him, "Lord Sanning, these are all Miss's things …"

"Show me." Sanning had people pile the books on the table with great interest while stuffing the rest of the books into a small bookshelf beside them.

In such a heavy book, there were still many prescriptions written by Gu Liuyan himself, but there were so many of them that even as a martial artist, Sang Ning couldn't tell if it was right or wrong. He was only slightly stunned.

When night fell, the room was lit up by candles.

Gu Danyan had just woken up from his hunger, as if he was not surprised by the fact that there were guards in the room. He put on his coat and walked out, not disturbing Sang Ning's movements, adding a cup of water to moisten his throat, but Sang Ning accurately took it and said: "Come, bring some hot water and food."

Although the cup was taken away by someone, Gu Daiyan still sat down obediently, rummaging through two books that he had not yet finished. He opened them on the table and asked Sangning: "Has he gone back yet?"

"If you miss him, then ask him to accompany you later." Sang Ning didn't even raise his head as he looked at these Ghost Gods and Demons' theories with interest.

"No need …" Gu Liuyan was speechless. She waited for the maidservants to bring her food before helping her put on two sets of clothes.

Gu Liuyan was too lazy to care about it. When she was being watched, she was afraid that a long line of people would follow her. She simply ate and flipped through the books before asking the servant: "Did you get the ingredients back?"

"It has already been retrieved." The maidservant hurriedly spoke up.

"If that's the case, then go and call the lord who was with Sang Ning just now and bring some clean water and cloth over. It would be best if we went to the restaurant to ask if there's any wine, and bring it along as well." Gu Ming Yan said as she took out a few sheets of paper from another book and handed them to Sanning: "Sanning, please take a look at these sketches and draw out a map. Compare them with the second book you have, find out what's different about them and tell me."

Sang Ning was stunned for a moment. He then took the stack of papers and asked while reading, "You're not even calling him by his name? Why did you ask him to come here?"

"Even though you're the one who brought him here, you can't let your guard down." Without raising his head, Gu Ming stuffed a handful of vegetables into his mouth. After eating one mouthful, he said softly, "I smell the blood. I just didn't expect that he wouldn't shamelessly come to find me to bandage my wounds."

This girl was truly amazing.

Sang Ninglang laughed a few times and obediently began to draw.

When Duan Chengxuan arrived, he was still wearing his daytime clothes, and the dust on his face wasn't even cleaned up properly, as if he hadn't rested since the beginning. When he saw Sang Ning, he was slightly stunned, but he still walked to Gu Liuyan's side.

"I'm afraid you're dead." Gu Danyan's expression did not change as he opened his mouth and finished the rest of the food. Only then did he pass the remaining food to the maidservants.

The moment Duan Chengxuan sat down, Gu Danyan's nimble hands had already reached over and stripped off his clothes in front of Sang Ning. Countless pieces of cloth and cloth were mixed within — these were all proof that Duan Chengxuan was being hunted.

He only quietly took off all of the cloth strips and carefully changed the medicine for him. Only then did he bandage his wound again, and while doing so, he pushed a cup of wine that the servant girl had brought over to his side. "Warm up, go to my bed and sleep for a few hours."

When the sun touched him, the normally warm hand was frighteningly cold.

No matter how formidable Duan Chengxuan was, he was still a person of flesh and blood.

Sang Ning didn't even glance at the drawing. After being stunned for a moment, Duan Chengxuan came over with a probing look on his face. He placed a hand on Gu Danyan's waist and asked, "Do you still feel impatient?"

"It should be fine when I'm awake." Gu Mingyan sniffed. "I smell blood and I might vomit all over you."

Duan Cheng Xuan hurriedly moved aside. She had never been so careful since she was young. She then glanced at her lower abdomen with a worried gaze. "It's already late at night …"

"I slept during the day and was in high spirits at night. Only a three year old child would need someone to sleep with me!" Gu Danyan impatiently waved away the hand he still wanted to reach over. This time, even his shoulder was tightened.

Withdrawing his hand, Duan Chengxuan didn't continue joking around and only instructed the guards outside to find another two maids to serve them. He then went to the back of the bed to undress, and after a short while, he walked into bed and fell into a deep sleep.

The only one who slept well was tonight.

Under the light of the candle flame, Sanning could clearly see the sparkling and translucent eyes of Gu Pingyan.