In the back garden of Tu Su Mansion, the sun shines through the mottled leaves onto the bluestone path, casting a mottled shadow. Mrs. Tu Su and Master Tu Su sit on exquisite rattan chairs, and opposite them is their son, Tu Su Bo. The three of them sit around the tea set on the stone table, leisurely sipping tea.

Madam Tu Su gently wiped away the water droplets on the teacup and smiled, "Bo'er, do you know the origin of the name of this Tu Su Mansion?"

Tu Subo shook his head and looked at his mother curiously: "Mom, I really don't know. Can you help me solve this doubt?"

Mrs. Tu Su smiled, with a look of nostalgia in her eyes: "Back then, your grandfather made many outstanding achievements in the war. The emperor gave him the name 'Tu Su' to commend him. From then on, our house was named Tu Su. The name Tu Su represents both the cruelty of war and the joy of victory. It is the glory of your Tu Su family."

Master Tu Su took over the conversation and said solemnly: "Bo'er, you must remember that every brick and tile of this Tu Su Mansion was earned by your ancestors with blood and sweat. You must inherit the family's glory and pass on the family's spirit."

Tu Subo straightened his chest and said firmly: "Father, mother, don't worry, I will remember the honor of the family and bring glory to the family."

Mrs. Tu Su patted her son's hand gently, her eyes full of relief: "Okay, okay, the future of our Tu Su family is in your hands."

The three of them sipped their tea for a while, and Mrs. Tu Su suddenly changed the subject: "Bo'er, have you ever heard of the rumors in the martial arts world?"

Tu Subo nodded: "Mother, I have heard a little bit about it. It is said in the martial arts world that there is a mysterious medicine that can prolong life and even bring people back to life. Many people are looking for this medicine."

Master Tu Su sneered: "Rumors in the martial arts world are mostly untrustworthy. If this medicine really existed, it would have been in the hands of the royal family long ago, and there is no way it could have spread to the martial arts world."

Mrs. Tu Su said thoughtfully: "I have heard that this medicine does exist. I once heard from a strange man in the martial arts world that this medicine is called 'Immortal Grass' and grows in the extreme north, where the environment is harsh and it is difficult for ordinary people to reach."

Tu Subo's eyes flashed with curiosity: "Mother, why don't we send someone to look for this medicine? If we can find it, it will be good for the family."

Master Tu Su pondered for a moment and said, "Bo'er, you don't know that although this medicine is precious, the process of searching for it is full of dangers. Moreover, many people in the martial arts world are looking for it. If we intervene easily, I am afraid that we will cause unnecessary trouble."

Madam Tu Su sighed softly: "Yes, Bo'er, you have to understand that the world is dangerous and we must act with caution. However, I think this medicine may not be as magical as the rumors say. We should focus on the stability of our family."

Tu Subo nodded silently and secretly made up his mind to work hard for the future of his family.

At this time, a servant came running over, panting and saying, "Master, Madam, there is a strange man in Jianghu who wants to see you. He said he has news about the immortal grass."

Mrs. Tu Su's eyes flashed with surprise: "Oh? He actually came to my house on his own?"

Master Tu Su frowned and said, "Let him in. We'll hear what he has to say."

The servant took the order and left. After a while, a strange man in a Taoist robe walked in. He had a thin face and deep eyes, giving people a mysterious feeling.

Madam Tu Su asked, "Excuse me, sir, is the news about the immortal grass you mentioned reliable?"

Yi Ren smiled slightly and said, "Madam, the information I told you is absolutely reliable. However, I have one condition."

Master Tu Su asked coldly: "What are the conditions?"

The stranger said in a deep voice: "I need the protection of the Tusu Mansion and enough resources for me to find the immortal grass."

Tu Subo stood up and said firmly: "We can agree to your conditions, but you have to make sure what you say is true."

Yiren nodded: "Don't worry, I won't let you down."

…

Mrs. Tu Su and Mr. Tu Su sat in front of the exquisite mahogany coffee table, gently stroking the warm teacups, their eyes full of joy.

"Master, look at this tea. It's emerald green in color and the soup is clear. It's really good tea." Mrs. Tu Su whispered softly, her eyes flashing with love for life.

Master Tu Su smiled slightly, nodded and replied: "Madam is right, this tea is indeed extraordinary." His eyes showed both appreciation for tea and deep affection for his wife.

At this time, Tu Subo walked in. He was wearing a blue robe, with handsome features and a serious expression. He bowed to his parents and then sat on a chair beside them.

"Bo'er, what's wrong with you? Why do you look so bad?" Mrs. Tu Su asked with concern.

Tu Subo was silent for a while, then sighed: "Mother, I have been studying father's poems recently, but I always feel that there are some parts that I can't understand."

Master Tu Su heard this, and a trace of relief flashed in his eyes. He patted Tu Su Bo on the shoulder and said, "Bo'er, the way of poetry is not a one-day job. You will understand it slowly and you will understand it."

Tu Subo nodded, a hint of determination flashed in his eyes: "Father, I will try my best."

Mrs. Tu Su looked at her son, feeling relieved. She said softly, "Bo'er, do you know that your father also studied hard when he was young? At that time, he stayed in the study room for the whole day."

Tu Subo listened, and a hint of curiosity flashed in his eyes: "Father, I rarely hear you talk about the stories of your youth."

Master Tu Su smiled slightly, his eyes full of memories: "At that time, I was also a passionate young man, with a strong interest in poetry, calligraphy, painting, and martial arts. Your grandfather was a great scholar at the time, and he was very strict with me, so I had to work hard every day."

Tu Subo listened, and a trace of admiration flashed in his eyes: "Father, you are really amazing."

Master Tu Su smiled, his eyes full of kindness: "Bo'er, you have to work hard too, and try to surpass me."

Tu Subo nodded, his eyes full of determination: "Father, I will."

The night was as dark as ink, and the candlelight flickered. Tu Subo stood outside the mansion, staring nervously ahead. Behind him, the door of Tu Su's mansion was open, revealing a warm light. Suddenly, a breeze blew by, and he pursed his lips tightly, frowning.

At this moment, a figure walked out of the mansion. It was his good friend Pei Jinxiao. Pei Jinxiao was dressed in green, elegant and suave, with a heroic look between his eyebrows. He looked at Tu Subo and walked over with a smile.

"Brother Bo, what's wrong with you? Why are you so nervous?" Pei Jinxiao asked softly.

Tu Subo sighed and shook his head: "Alas, something happened in the mansion today, I am worried that it will affect you."

Pei Jinxiao raised his eyebrows and said with a smile: "Brother Bo, you are too serious. What can affect me?"

Tu Subo looked at Pei Jinxiao with a worried look in his eyes. He hesitated for a moment and finally said, "To be honest, I found an ancient book in my study today. It records a mysterious poison. I am worried that someone will use this poison to harm people in the mansion."