At this time, Li Er also felt a little strange, after all, although the official road of the Tang Dynasty was smooth, but the academy was built in the mountains, so the bumps were certain, but Li Er, who was sitting on the carriage, did not feel the slightest bump, so Li Er also poked his face out of the carriage curiously.

As a result, Li Er saw a smooth and straight gray cement road leading straight into the mountain.

"Here, Guanyin, come and take a look, you can see what this road is paved with." After Li Er finished speaking, he let go of the window beside him, and Empress Eldest Sun tilted her body to look at the road under her feet. As a result, Empress Changsun also shook her head after reading it and said, "The concubine doesn't know what this road is paved with." ”

"Stop." Li Er really couldn't hold back the curiosity in his heart, so he asked the escort to stop the carriage that was running on the cement road, and after the carriage stopped, Li Er walked out of the car quickly.

Li Er stood on the cement road, and didn't do anything else, just stomped his feet vigorously, and found that the road surface was much harder than he imagined, so Li Er bent down and began to buckle the ground with his hands, pouting Li Er looked very unsightly.

But Li Er deducted it for a long time, not to mention the stones, and even the clods of soil were not deducted, except for the dust on his hand, Li Er found nothing.

"Come on, get me some water." Li Er commanded.

Soon Li Er's guards took a water bag, Li Er took the water bag, and sprinkled all the water in the entire water bag on the ground, Li Er thought that the road would become muddy like a dirt road, but what Li Er didn't expect was that the water was poured on the road, but there was nothing unusual about the road, not to mention the mud, even the dust was washed clean.

"Hey, this road is really famous." Li Er couldn't help but let out a questioning voice.

"Erlang, what are you doing? Why haven't you come back yet? Empress Eldest Sun, who was sitting in the carriage, didn't know what Li Er was doing on the road, so she asked in the carriage.

Li Er heard the urging of Empress Changsun, and did not stay on the road, but also got into the carriage, Li Er got into the carriage, and the carriage also slowly continued to follow this hard cement road and began to continue to march towards the academy.

"Erlang, what did you just do when you got out of the car?" Empress Eldest Sun continued to ask.

"Ah, I just went down to see what this road is made of, and why it's so hard and smooth." Li Er replied truthfully.

"Father, do you know what this road is made of?" At this time, Li Lizhi also turned her face and asked.

Hearing his daughter's question, Li Er couldn't help but be a little embarrassed, after all, his wife and daughter asked him, but he didn't know the answer, but he didn't know, so Li Er had to tell the truth and said: "Well, I don't know, but this thing must have been made by that guy from Qingquan, and I can meet Qingquan and ask him later." ”

Empress Eldest Sun also nodded after hearing this: "That's right, this kind of thing can only be made by Qingquan, after all, Qingquan can always come up with something surprising." ”

Hearing Zhang Nan's name, Li Lizhen didn't know why, her heartbeat was a few beats faster for no reason, Li Lizhen wanted to ask about the detailed situation, but I don't know how, Li Lizhen couldn't open her mouth, after all, Li Lizhen didn't even say anything to Zhang Nan.

The last time we met was at the celebration banquet where Zhang Nan led his troops to defeat the Turks and captured the Jieliban division and returned to the dynasty. And the song "Chivalrous Journey" made by Zhang Nan was also deeply remembered by Li Liqing.

Although Li Er didn't find it, Empress Eldest Sun saw her daughter's appearance of wanting to say goodbye, but Empress Eldest Sun didn't pick it out, just pursed her lips and feet, and smiled faintly.

The carriage was galloping on the cement road, and soon, the carriage slowly stopped at the door of the academy, but Li Er, who was sitting on the carriage, didn't know, and felt that the carriage had stopped, so Li Er sat in the carriage and asked, "What's wrong, what's wrong, why did you stop." ”

Outside the carriage came the voice of Qian Niuwei driving.

"Back to the emperor, the academy has arrived."

"Oh? Already there? Why is it so fast, I remember that this academy is not far from Chang'an City. Li Er glanced at Empress Eldest Sun with some surprise, but Li Er still got out of the car.

After Li Er, Empress Changsun and Li Lizhen got out of the car, Li Er found that Li Yuan was actually standing not far from the carriage.

"Erlang is really a big shelf, let me stand here in vain for so long, this carriage is coming, don't get off the carriage soon, I don't know what I'm doing sitting in the car." Li Yuan said with some displeasure. After all, this Lao Tzu is waiting for his son, but it's the first time.

Li Er also heard the displeasure in Li Yuan's mouth, and hurriedly pulled Empress Changsun and Li Lizhen to Li Er's side to salute Li Yuan.

"Father, forgive me, but this journey is indeed a bit unexpected by the sons, and this road seems to be a lot shorter." Li Er hurriedly said.

"Hmph, it's not that the road is a lot shorter, it's that the road is well paved, that's why you can come so fast. Do you know that the road under your feet was paved by my leaders? Saying this, Li Yuan also stomped his feet with some pride, as if to show off, letting Li Er see how strong the road he paved was.

"Father, how can you do it yourself? This is really too ......" Li Eryi didn't know what to say for a while, after all, Li Er didn't dare to accuse Li Yuan of not wanting to speak.

"What's wrong? As the emperor, I naturally want to set an example in front of the world, and I have also participated in this way, not to tell Erlang that sometimes as a monarch, you still have to personally experience the hardships of seeing the suffering. Li Yuan looked like a loyal elder, and Li Er had to listen to what he said.

Li Er had to nod again and again and said, "Yes, yes, Erchen has been taught." ”

"Well, that's pretty much it, let's go, let's go to the academy." Li Yuan said, then turned around and prepared to leave.

"Eh, Father, wait a minute, this, Qingquan?" Li Er looked around, but he didn't see Zhang Nan's figure at the gate of the academy, so he was a little strange, after all, he came to the academy in person, and this Zhang Nan didn't come out to greet him, which was really too polite.

"Huh? What's the matter, you're still a little dissatisfied with me coming to receive you personally, right? Li Yuan asked a little strangely.

"Ah, no, no, it's just a little strange that I didn't see Qingquan." Li Er hurriedly waved his hand and said.

"He's tidying up your office, hmph, Erlang, you're really a good means, with such a loyal courtier." Li Yuan said with a little dissatisfaction, it is estimated that Li Yuan thought of why there were no courtiers like Zhang Nan when he was in power.