"Little Er, do you know why Sun Hai is looking for your father?" I asked Chen Xiaoer.

Chen Xiaoer replied, "I don't know. When Uncle Sun Hai came to my house a week ago, he felt mysterious. Although it was said that he was taking my dad to survey the ore, it always gave people the feeling that they had other intentions. I told my dad not to go. But Uncle Sun Hai not only persuaded my dad with affection, but also paid my dad a lot of money. My dad couldn't resist the temptation, so he agreed. ”

After listening to this, I pondered for a while, and then asked Chen Sidao, "You said before that Xiao Er's father was a dry mason?"

Chen Si nodded, and Xiao Er also said, "Yes, my dad is a mason." Many of the brick houses in the village were built by my father. Speaking of this, Xiao Er looked extremely proud.

I smiled and said, "Why is your house a thatched house?"

"That's not my house." Chen Xiaoer said, "You just saw us coming out of the thatched house in a hurry, and we were just resting there temporarily. ”

After hearing this, I looked at Chen Si with a puzzled expression, Chen Si affirmed Xiao Er's words, and she said, "That's really not Xiao Er's home. ”

"Hmm." I answered, and was silent.

After a long time, he asked Chen Xiaoer: "Xiaoer, do you know where your father went?"

Chen Xiaoer shook his head.

"Didn't your dad tell you anything when he left?" I asked him again.

He shook his head again.

"Xiao Er, we're not bad people." I was worried that Xiao Er was hiding something, so I persuaded bitterly, "You tell your uncle where your father is now." Okay?"

"I don't really know where my dad went." Chen Xiaoer said.

"Little Er, your father's situation is very dangerous now. If we don't find your dad in time, your dad might be like your mom."

"Ahh Before I could finish my words, Chen Xiaoer interrupted me with an exclamation, and he looked at me anxiously and fearfully.

After a long time, he hesitated and said very worriedly: "Will my father really die too?"

Chen Si and I nodded at the same time.

I said, "If we had found him in time, he probably wouldn't have died." ”

After hearing this, Chen Xiaoer said helplessly: "But I don't know where my dad is now." Alas!"

"Didn't your dad really tell you anything before he left?" I still didn't want to give up, so I still asked Chen Xiaoer again.

Chen Xiaoer thought for a while before saying, "My dad told me a few very strange numbers before leaving, which are: 1, 3, 4, 7, 11, 18, 29, 47, 76. I don't know why he told me, he just said that this set of numbers is very important, and that it can save my life when it is critical. ”

After listening to this, I pondered, and Chen Pi told Chen Xiaoer that the set of numbers were 1, 3, 4, 7, 11, 18, 29, 47, and 76. This is actually a very simple set of numbers, and the sum of the first two numbers is the value of the next number. For example, 1+3=4, 3+4=7, 4+7=11, 7+11=18, and so on, 29+47=76. This combination of numbers is extremely common in elementary school mathematics.

The question is, why did Chen Pi tell such a simple story to Chen Xiaoer? What kind of mystery does this have?

"Look, what's that?" Chen Si suddenly pointed not far in front of us and exclaimed.

When I heard the sound, I noticed that there was a small green dot in front of me, flashing and flashing.

"You stay here for now, and I'll find out." I said to Chen Si and Chen Xiaoer.

The two of them nodded, and I slowly walked towards the little dot of the green light.

The dot was only two or three meters away from us, and I leaned over to look at the dot and saw that it was just a small hole, and the green light was the light coming out of the hole.

I didn't expect it to be a hole in a hole.

I called Chen Si and Chen Xiaoer to come over, and then the three of them worked together to dig the hole bigger. At this moment, a small path appeared in front of the three of us, and this path was filled with green light.

"What the hell is going on?" Chen Si exclaimed.

"Be careful, this road may have hidden mysteries." After I finished speaking, I picked up a piece of soil and threw it into the sheep intestine path, and there was a loud sound, and the small soil was instantly ignited and burned to ashes.

"Ahh Almost at the same time, Chen Si and Chen Xiaoer exclaimed in surprise and took half a step back in fright.

I turned to the two of them and said, "This sheep intestine trail is full of phosphorus powder, which spontaneously combusts when exposed to light, and emits light blue or green. It seems that we can't go to this trail. ”

"Then let's get out!" Chen Si suggested.

As soon as she finished speaking, there was a sound of footsteps overhead.

"Not good." I said secretly, and immediately found a dark hiding place with Chen Si and Chen Xiaoer and hid.

At this time, as the sound of footsteps approached, a middle-aged man about forty years old appeared in the tunnel.

He whispered as he walked, "Little Er, are you here?" It seems that he is also here to save Chen Xiaoer, but who is this middle-aged man?

Just as I was thinking, Chen Xiaoer suddenly broke free from my and Chen Si's hands and ran to the middle-aged man's side. At the same time, Chen Xiaoer shouted loudly: "Dad, I'm here-"

The middle-aged man suddenly turned around and hugged Chen Xiaoer in his arms.

The middle-aged man said excitedly: "Little Er, it's okay if you're fine." Daddy really misses you. It seems that he is Chen Xiaoer's father - Chen Pi.

"Dad, woo, I miss you so much" Chen Xiaoer, who threw himself into Chen Pi's arms, cried.

Now Chen Si and I have no need to hide, so we went out one after another to expose Chen Pi's eyes, and then quietly looked at Chen Pi and Chen Xiaoer's father and son.

After Chen Pi found out about me and Chen Si, he immediately put Chen Xiaoer down, and then protected Chen Xiaoer behind him.

Chen Pi said in horror: "Who are you?" Why are you here? ”

"Uncle Chen Pi, don't you remember me?" Chen Si walked closer and said to Chen Pi.

"Are you Chen Si?" Chen Pi was stunned for a moment and groaned.

"yes. I'm Chen Si! Chen Sixi said, "I didn't expect you to remember me!" ”

"I didn't expect you to be so old." Chen Pi looked at Chen Si and muttered to himself.

I was suddenly very strange, according to Chen Si, she has been staying in Shangbao Village for the past three years. This neighbor folks, look up and don't look down. How could Chen Pi have such an expression after seeing Chen Si? How could Chen Pi sigh that Chen Si was so big?

Could it be that Chen Si lied to me? She hasn't been in Shangbao Village at all in the past three years?

I was puzzled in my heart, but I couldn't say that I was going to say it, so I had to quietly look at Chen Pi, Chen Si, and Chen Xiaoer.

At this time, I could only hear Chen Pi say: "Chen Si, why are you back?" ”

"I'm here to save you!" Chen Sidao, "Uncle Chen Pi, do you know where my father went?" ”

"Your father?" Chen Pi was stunned, "I don't know where your father is." After he finished speaking, he hugged Chen Xiaoer tightly in his arms, for fear that Chen Si and I would snatch Chen Xiaoer in his arms away. (To be continued.) )