Looking at Bai Rouyun, Li Moyun was quite surprised. Although he knew that she was good to him, he did not understand why she would give him so many recipes and formulas in one go.

He was looking at the curious Wen Sihan, and he was feeling conflicted. He had known Wen Sihan for as long as he had lived, but he was not willing to bring any problems to Bai Rouyun, so he needed to figure out a way to save her.

"I have something for you," Li Moyun said, as he looked at Wen Sihan. "But before I give it to you, you have to take a Heavenly Oath that you will never leak the information I am giving to you now."

Wen Sihan was stunned. Throughout all the years he had followed Li Moyun, there had never been the need for a Heavenly Oath. This meant that what he was about to know was going to be earth shattering news.

Wen Sihan looked at Bai Rouyun and Li Moyun with curiosity in his eyes. He was eager to know what exactly it was that could make his friend so solemn, and while he would have to swear a Heavenly Oath, he was not too bothered by it.

Heavenly Oaths could not be countered. If someone were to break their oath, they would have their souls shattered. Everyone knew that there was such a thing as reincarnation, but if their soul shattered, they would be unable ever to live again.

Therefore no one dared joke about the Heavenly Oath, and Wen Sihan was the same. However, he had never even once considered betraying Li Moyun, so he raised his hand, placed it over his chest, and solemnly swore, "I, Wen Sihan, swear the Heavenly Oath never to betray Li Moyun or Bai Rouyun. I swear that I will never tell a second soul about what I hear here today or about the information I will receive."

A slight silver gleam flashed around his ring finger, and then the oath had taken effect. Seeing that he was so straight forward about it, Li Moyun was pleased, and he tossed the book to Wen Sihan.

Wen Sihan was very curious as to what could have caused Li Moyun to be so alert, but upon seeing just the first page of the book, his eyes widened in shock, and his breathing became hurried. This was a treasure!

He flipped through the formulas and recipes one after another, and the more he saw, the bigger his eyes grew. His mouth was unable to close, his jaw was dropped, and his heart was beating rapidly.

These were the ancient recipes of all pill formulas he had ever heard about, not to mention a significant portion of pills he had never heard about before.

This was a real treasure, something he would never have dreamt about ever encountering, but now Li Moyun had given it to him so unceremoniously.

"This... This book is a treasure!" Wen Sihan said when he finally managed to find his voice again. Then his eyes landed on Bai Rouyun, who was seated on Li Moyun's lap, her appearance resembling a small white rabbit, but her eyes cunning and intelligent.

"You were the one who had access to these ancient formulas and recipes?" he asked as he looked at Bai Rouyun with shock in his eyes.

Bai Rouyun looked at Wen Sihan and smiled sweetly. "I promised my hubby to give them to him later," she said smilingly.

She was a ditzy person, but she understood Li Moyun quite well. She understood that he would never let any danger befall her, so he forced the alchemist to take a Heavenly Oath. Although she knew it was mean of her to force him to make his subordinate take such an oath, this was the only way she was secure in handing him the book.

"You are not a fool," Wen Sihan suddenly said as he looked at Bai Rouyun, his eyes were suddenly slightly solemn, but Bai Rouyun acted as if she did not see the seriousness of his expression.

"I am indeed not a fool," Bai Rouyun said with a smile. "If I was a fool, where would these recipes and formulas come from? Where would the marrow-cleansing pill formula come from?" she asked sweetly, but her behavior was just making Wen Sihan even more confused. Why had she pretended to be a fool if she had these treasures?

"I cannot explain to you what happened to me," Bai Rouyun said with a dejected expression on her face, as she leaned back against Li Moyun's chest. "But I can promise you never to betray Li Moyun. As long as he is good to me, I will be good for him. As long as he does not betray me, I will do my utmost to assist him."

Bai Rouyun did not swear, but Wan Sihan could understand her meaning. He also believed in her; she had a strange aura that made people want to be close to her.

Also, he knew that she was true to Li Moyun. Otherwise, she would never have given him this book. This book was a treasure that would make everyone in the entire world exclaim in shock. If it were made public, every force would fight for it, but now it was in Li Moyun's hands, and from what Wen Sihan could see, he did not give any benefits to Bai Rouyun in return.

Li Moyun was also quite surprised when he had seen the massive book. He had thought that it would be good if she handed him one or two formulas, but this book contained so many of them!