Enabling Xu Jingzong is a secret move by Li Chengqian, and whether it can come in handy in the future depends on his performance this time.

Some people may think that an infrastructure project cannot be seen by Li Chengqian to see how capable Xu Jingzong is.

But in fact, this is not the case, after all, the renovation work of the West Pond Temple is not an ordinary project, because it involves the royal family, and the simple infrastructure project has become a complex project, and for the time being, those Qingliu who like to advise is a big problem.

But now Li Chengqian doesn't need to worry about this matter in a short period of time, Xu Jingzong should take the initiative to jump out and share the worries of his master, he just needs to pay attention to the train and rubber pipes.

Time passed little by little, during which Li Chengqian received a message from Cui Yu, and he already had some impressions in his heart about the war on the peninsula.

Now the difference is to join forces with Silla, which is no longer something that he Li Chengqian can control, and if the Silla people don't want to listen to Queen Seondeok's orders, he has nothing to do.

His wife is nearly three months pregnant, and what Comrade Xiao Li is concerned about now is when he will be able to hear his son's heartbeat, so his attention is all on the rubber tube, and he can not care about other things.

Of course, his son is just a subconscious thought in Li Chengqian's heart, and he will never say anything to Su Mei, after all, if he doesn't want to mess up the harem, the best way is for both men and women to be the same.

"Your Highness, why did you listen to it again, you said that there is no reaction now." Outside the Lizheng Hall, in the huge glass room, Li Chengqian didn't know how many times he put his head on Su Mei's lower abdomen to listen, which made Su Xiaoniang angry.

"You are my wife, and I have a baby in my belly, listen to what's wrong." Li Chengqian raised his head and said eloquently.

"But ......"

"Don't." Li Chengqian waved his hand and summoned Yang Yuxin, who was standing not far away: "Send someone to Xianyang and tell those guys that if the rubber pipe is not visible in the palace at this time tomorrow, three months later, they will conduct their research in the mountains of Lingshan." ”

"Yes!" Yang Yuxin pursed her lips, her face full of looks that she wanted to laugh but didn't dare to laugh.

"Your Highness, is that listening to what you are talking about really that amazing? Can it really be...... Hear a voice in someone's stomach? Su Mei has always been skeptical of Li Chengqian's persistence.

"When did your father-in-law lie to you, saying that if you can hear, you can hear." Li Chengqian didn't know how many times he had explained this matter to Su Mei, and he had even explained it to the point that he was annoyed, so he chose a straightforward concluding speech on her question.

The stethoscope can be regarded as a top invention in later generations in medicine, but if it weren't for the fact that he had a baby, Li Chengqian would never have thought of it anyway.

From this point of view, Su Mei has made a great contribution to the medical community of Datang.

But out of uncertainty about the unknown, whether it was Su Mei or several other wives, no one in the entire palace believed Li Chengqian's statement, and even Sun Simiao had a skeptical attitude.

"Your Highness......" Yang Yuxin, who had just left, had come back for some time, standing behind Li Chengqian and calling softly.

"Why did you come back so soon? It's not for you to ......" After being suspected by his wife, Li Chengqian, who was in a bad mood, rolled his eyes and overlooked, intending to talk to this personal female officer, but as soon as he turned around, he stared at the thing in Yang Yuxin's hand: "Huh? What are you holding in your hand? ”

"Xianyang sent it over, saying that it was a rubber pipe." Handing the black, soft black hose in his hand to Li Chengqian, Yang Yuxin said with a frown.

The black tube was coiled into a disc in the warm little hands of the little rain girl, and it looked like a small black snake, and it was this feeling that made her feel very uncomfortable.

"yes, that's it." Li Chengqian didn't have as many scruples as Yang Yuxin, reached out and grabbed the black hose from her, put it in his hand and looked at it seriously, and after a while, he looked up and said to Yang Yuxin: "What about the iron pipes that the palace asked the blacksmith to prepare?" ”

"In your study, the minister has just arranged for someone to ......, oh, I'm back." Miss Xiaoyu answered halfway, and then pointed to a guard who was running quickly.

An iron pipe, a long rubber tube, and a walnut-sized leather drum.

Li Chengqian's Datang version of the stethoscope was quickly assembled, looking at the thing in his hand that was almost the same as the modern stethoscope, the Tang prince had to let out a long sigh: "There is a long way to go!" ”

"Brother Prince, is this what kind of stethoscope is this? It doesn't look like much. "It's very warm in the glass room, Cheng Lin, this girl likes to run here when she has nothing to do, this time she happened to catch up with Li Chengqian's freshly baked stethoscope, and she took the initiative to ask out of curiosity.

"Yes, it's a stethoscope, but it's still too complicated for us, and we don't really know when it will be mass-produced."

The stethoscope is not a complicated thing in the future generations, and there is nothing wrong with even saying that it is rotten on the street.

But in Datang, it takes dozens of people and nearly half a month to produce, and what is made is not 'stereo' (an iron pipe, which can only be regarded as mono).

"Your Highness, how do you use this thing? What can be heard? Kong Wen was also attracted by the excitement here, and walked over from her bedroom, and when she heard Li Chengqian's sigh, she was afraid that he would drill the horns again, so she took the initiative to divert the topic.

"How to use ......" Under Kong Wen's reminder, Li Chengqian's eyes lit up, and he came to Su Mei's side in a few steps, holding a small leather drum on the other end of the stethoscope: "Come on, come on, little beauty, let your husband listen." ”

"Ahh I don't want to. As a result, to Li Chengqian's surprise, Su Mei ran to the side with a scream and hid behind Cheng Lin.

"Uh......" His Royal Highness the embarrassed Crown Prince was at a loss for what to do with the stethoscope in his hand, and he couldn't understand what Su Mei was afraid of.

On the contrary, a trace of abruptness flashed across the face of Kong Wen, who was standing on the side: "Your Highness, you seem to have said last time that this thing is to be attached to the skin, right?" ”

"Yes, that's ......" Li Chengqian nodded, and was about to say something, but he quickly reacted, daring Su Mei to think that he was going to take off her clothes in public.

Shaking his head helplessly, Li Chengqian unbuttoned one of his clothes, put the small leather drum in, and then beckoned to Su Mei: "Come, come and listen." ”

Su Mei shook her head firmly and stabbed Cheng Lin behind her: "Little Four, if you don't go, I'm afraid." ”

"What's there to be afraid of, look at me." Cheng Lin, who had already been eager to try, was waiting for Su Mei's words, and after hearing this, she was not polite, and jumped to Li Chengqian's side, with a hint of hope, and let him put the small iron pipe into her delicate and small ears.

(End of chapter)