When Shi Beiyu said this, Mu Siyin’s face was filled with shock, not to mention Old Master Lu and the others.

What did he mean?

Could it be that her grandfather… knew who her biological father was? !

Mu Siyin stared at Old Master Lu in shock.

Old Master Lu froze for a moment before he forced out a laugh. “Your marriage to yinyin is a joyous occasion, so don’t mention the past. Besides, I really don’t know who yinyin’s biological father is.”

As soon as he said this, old master shi snorted, “It’s not a glorious matter. Why are you calling him? !”

Shi Beiyu’s mother also disapproved, “Ah Yu, without a biological father, there would be no biological father. Why do you have to find him? I’ve been in trouble.”

Mu Siyin and the Lu family were already troublesome enough. If another biological father appeared, wouldn’t they be annoyed to death? !

Shi Beiyu saw that old master Lu was so disgusted by the mention of Mu Siyin’s birth father. He thought for a moment and nodded, “Alright, we’ll talk about this later.”

From Shi Beiyu’s point of view, Mu Siyin’s birth father’s status wasn’t low. If he could send her off, he wouldn’t let others say that Mu Siyin didn’t even know who her birth father was.

Moreover, he knew that she had always wanted to know who her biological father was.

However, it was obvious that old master Lu was very stubborn about this matter. It wasn’t something that could be explained in a short amount of time.

Seeing that Shi Beiyu wasn’t giving up, old master lu frowned and said, “You and Yin Yin shouldn’t think about this matter anymore. I really don’t know. You guys should hurry up with the wedding. I’m a little sleepy, so I’ll go back first.”

After saying this, he stood up from the sofa.

Seeing Old Master Lu’s intense reaction, Mu Siyin was also suspicious.

It seemed that it wasn’t that his grandfather didn’t know, but that he knew and didn’t want to talk about it.

“Grandpa, since you’re Sleepy, why don’t you rest here first? Wouldn’t it be more tiring to go back by car?”

Shi Beiyu wanted to ask Old Master Lu to stay and get more information.

However, old master Lu seemed to have guessed Shi Beiyu’s thoughts. He immediately rejected him, “No, I’ve developed a bad habit these years. I Can’t sleep if I’m not in my own room.”

Shi Beiyu couldn’t help but laugh and nod, “Alright then.”

Old Master Lu stood up and left. Old Master Shi and mother Shi didn’t want to stay here any longer, so they stood up and followed him out.

Ji Yang saw this and stood up as well.

After sending grandfather Shi and mother Shi off in the car, Mu Siyin could not help but stop Ji Yang. “Yang Yang, are you really going to work in the afternoon?”

Ji Yang nodded. “Yes, I’ll come and visit you on the weekend.”

When Mu Siyin heard this, she could only nod. Then, she said to Lu Jingchen, who was about to get into the car, “Cousin, when you guys go back, Drop Yang Yang off at the station.”

Ji Yang rejected without hesitation, “No need, no need. I can take a taxi myself.”

“Since it’s on the way, why are you being so polite? Why don’t I Get Someone to send you off?”

Hearing this, Old Master Lu, who had gotten into the car, smiled and said, “That’s right, Girl. Since it’s on the way, let’s go together.”

Since Old Master Lu had already spoken, Ji Yang couldn’t refuse anymore. She could only nod and say, “Alright then, I’ll be leaving first.”

“Okay.”

Mu Siyin turned her head and looked at Shi Beiyu suspiciously as the car gradually disappeared from her sight. “How are you sure that my grandfather knows who my biological father is?”

Shi Beiyu raised his hand to stroke her hair and chuckled. “I have a hunch that once our wedding date is set, I’ll go and ask him.”