"Ding! Ding! Ding! Ding!" As the bell rang, the sophomore class of the fourth year of the Shuize University suddenly became noisy. The sound of chairs rubbing against the cement floor, the creaking sound of moving class tables, and the sound of books being sorted out suddenly rang out.

"Hanzi, I'll go fishing with A'Yan, Miao, and Ka. Are you going or not?" Wei Guangxing asked.

Hanzi's surname was Lu, and his name was Lu Mohan. He was not tall, less than 165 cm tall. He looked ordinary, like a kind of dark and thin village boy, from Lu Village. Wei Guangxing was a native of Wei River Village. He had a square face, a tall and big horse, and dark skin. He looked very strong. Both of them were students of Class 4, the second year of senior high school in Shuize University.

Han Zi said with a smile, "No, my mother asked me to go back after school and help my grandfather collect herbs. You can go and have fun."

Wei Guangxing pretended to faint and said, "Han, Hanzi, you are really a filial son of 24 years old. I don't care about you. Let's go fishing. There are a lot of fish in Chenchi succeed. After fishing, we can enjoy a feast of fish. Tut-tut, when I think of it, I drool. Hanzi, don't hang your appetite. It's because you are not blessed."

"Humph, you're the only one who knows how to brag. Don't be caught by the reservoir people. Otherwise, you may ask Instructor Yan to bring people out of the police station tomorrow. Do you still want the Sheng Yu Banquet? It should be a collective feast for Mosquito brothers in the police station." Han Zi joked.

Wei Guangxing snorted and said, "Shut up. At that time, everyone in the reservoir was eating, and no one would go to see the reservoir. I won't talk to you anymore. Let's go first." After that, he rushed out of the classroom.

Han Zi shook her head and said to herself, "Humph, fishing is a boring thing. I'll go back and read grandpa's medical book. There are many strange things in it, which you haven't heard of before. That's really something fun."

Han Zi's home was on the opposite side of Shuize University. It was a six-meter-wide highway that stretched less than 500 meters ahead.

Han Zi's grandfather, Lu Lingyi, was an old Chinese medicine practitioner who opened a clinic. In the hall on the first floor of their building, there was a sign at the door, on which there were six words "Lingyi Chinese medicine clinic" written in regular script.

A few minutes after they arrived at Hanzi's house, Hanzi heard a hoarse voice coming from inside. When she entered the room, she saw no patient in the clinic. Her grandfather was lying on a wooden armchair leisurely, reading a book named "The Compendium of Master willingly". There was an old-fashioned radio beside him. The hoarse voice she heard outside the door was from this radio.

"Grandpa, I'm back." After entering the door, Hanzi greeted him and put down a few books. She squatted beside the old man and asked, "Grandpa, how many patients have you seen today?"

The old tutor raised his head and smiled. "A normal heart. A normal heart is naturally a blessing."

"It can't be. Grandpa, you don't have a patient today. It turns out that Grandpa also has zero duck eggs." Han Zi joked.

The old tutor chuckled and said, "The duck egg is good. It's not only nutritious but also not warm food. It's delicious and nourishing. What's not good about it?"

Han Zi smiled and said, "Grandpa, you are also very humorous. Grandpa, I want to discuss something with you."

Glancing at his grandson, the old man chuckled and said, "What's there to discuss? Just a flick of your ass and you'll know what kind of fart you're going to fart at. Are you here to steal my ancient book again?"

Han Zi giggled and said, "Grandpa, when did you become a worm?" As she spoke, she looked up and down at her grandfather, who looked like an old naughty child. The smile on her face was very strange.

The old tutor was taken aback. "What did it turn into a worm? Does grandpa look like a worm?"

Hanzi smiled cunningly and said, "If it wasn't a worm, grandpa, how could you know what my belly worm is thinking?"

The old tutor suddenly understood and reprimanded, "Good boy, it turns out that you've made Grandpa into a worm. If it's really you, even Grandpa is so smart that he would be tricked by you." After saying that, the grandfather and grandson looked at each other and laughed.

Han Zi asked seriously, "Grandpa, I'm serious about you. Do you remember what you told me on my 10th birthday?"

The old man thought for a moment and said, "When you were ten years old? What did I tell you? Grandpa is old and stupid."

Han Zi said, "That year, I said I wanted to read the ancient medical books in your precious box. Why did you tell me that? You said, 'It's not the right time yet. When you grow up, grandpa will show you.' Do you remember this sentence?"

The old man thought about it again and said, "I seem to have said something like that. So what? Have you grown up?"