"Is this for me to be a trust?" The emperor's eyes sparkled, and he could see through Han Yue's tricks at a glance.

Han Yue smiled and pretended to be ashamed: "Why did my father say it so bluntly? When Todo is ugly, we call it product endorsement, and after the matter is completed, you will be divided into two......"

Li Shimin smiled coldly, suddenly stretched out five fingers, and said forcefully: "I want to open five or five!" ”

"Don't even think about it!" Han Yue's face was furious, and he suddenly turned his head and called, "My son's sister come here, my father is disobedient and wants to take our money, you pluck his beard for me." ”

The little son swayed and ran over, looking at Li Shimin with his little head up, those big black eyes were innocent, the emperor was stared at by her with a stupid face, and hurriedly said: "Don't be angry, son, don't fight with you." Your eldest brother is not a good thing, so let's make two things. ”

Han Yue's face was full of pride, and suddenly he laughed a few times, and said, "Now there is only one!" ”

Li Shimin was furious and said, "Just said two percent? ”

Han Yue snorted, and his eyebrows fluttered: "I didn't send out the little son just now, so the father and the emperor have two components, and now that our little princess is out of the horse, your two percent will naturally become one percent, this is called the appearance fee, and the price of the little son is not low!" I want my son to say that my father still doesn't struggle, otherwise I won't give you any endorsement fee. ”

"Don't give me a ...... in Chengdu" Li Shimin was extremely depressed, and almost spurted out a mouthful of old blood.

Later, the eldest grandson and several concubines hid their smiles, and the queen shouted from afar: "Your Majesty, don't fight, how can a father fight for a child?" ”

"Forget it, I'll be more generous!" Li Shimin shook his hand, picked up the thing that Han Yue handed him, and looked carefully at the sunlight in the sky.

Han Yue leaned over and said, "How does Father feel about this thing?" ”

"How does it feel?" Li Shimin groaned slightly, holding the object and constantly probing, and suddenly said, "Does this thing have a name?" ”

"Of course there are names!" Han Yue snorted, and recalled in a voice: "Erchen calls this thing a watch. ”

"Watches?" Li Shimin frowned slightly, he looked at the golden bracelet of the watch, and guessed tentatively: "Could it be something worn on your hand?" ”

Han Yue nodded and said, "Father guessed right, this thing is exactly what he wears on his hand." ”

"What's the use?" Li Shimin glanced at him.

Han Yue raised his head to the sky and replied with a smile: "There are sun, moon and stars in the sky, there are four seasons in the sky, the four seasons are divided into three months, thirty days a month, twelve hours a day, and each hour has two quarters......"

Li Shimin was bored of hearing this, and blurted out: "Don't be verbose, just say what this thing is used for." ”

Han Yue's expression was closed, and two words slowly spit out from his mouth, and said solemnly: "Time!" ”

"Timekeeping?"

Li Shimin frowned and raised his watch again to watch.

Han Yue leaned over and pointed: "Father, look at this dial, it has twelve grids, in the middle are three constantly rotating hands, these three hands have a name, the shortest is called the hour hand, every one square is an hour, the second shortest is called the minute hand, each square is five minutes, the longest one is called the second hand, and every time it is provoked, it is one second!" ”

Li Shimin's face was dazed, and he couldn't understand these terms at all.

Han Yue continued to answer: "Our Datang is calculated according to one day, one night, and twelve hours, but this watch is calculated according to one day, one night, and twenty-four hours. That is to say, an hour is equal to two hours, each hour is equal to sixty minutes, and each minute is equal to sixty seconds......"

Li Shimin listened and thought, his eyes gradually became shining, everyone behind him looked shocked, Li Chengqian suddenly trembled and said: "This is to change the timekeeping method for thousands of years, big brother, are you sure this method can really work?" ”

"Good question!" Han Yue glanced at him and said approvingly: "Second brother can see that this is a change in the timing method, obviously you are thinking with your heart." ”

Li Shimin held his watch and pondered, and suddenly pointed to the dial and said to Han Yue: "You come and tell me, what time is it?" ”

Han Yue took a look and found that the hour hand on the dial happened to point to seven o'clock, while the minute hand was in the center of twelve o'clock, which happened to be seven o'clock in the morning.

He smiled slightly at Li Shimin and said, "Father and Emperor can see clearly, it is now eight o'clock in the morning, according to the timekeeping method of the Tang Dynasty, this hour is exactly the early morning ......."

Li Shimin turned his head abruptly, shouted at the stairs not far away, and said, "Where is Jin Wuwei?" Tell me what time it is? ”

As soon as he finished speaking, a melodious bell suddenly sounded in the distance, and the bell rang five times in a row, and Li Shimin's face changed five times.

"Zi Chouyin Maochen, one, two, three, four, five......" The emperor suddenly gasped and said in shock: "The bell rang five times, it is the fifth hour of the day, and the fifth hour is exactly the hour, that is, eight o'clock in the morning?" ”

Han Yue nodded slowly and said with a smile: "What does Father think of this technique now?" ”

"Good!" Li Shimin's tiger eyes flashed, and he nodded solemnly and said, "Very good!" ”

……

……

Han Yue stood sideways beside the emperor and continued to explain: "My Datang Dynasty times in twelve yuanchen, and each hour is divided into two quarters, but it is not precise enough, and all kinds of words to describe time are very vague, such as a stick of incense, a cup of tea, and a breather. These descriptions are very unclear, and they often confuse the retainers. ”

He glanced at Li Shimin, smiled and said: "So I made this kind of watch, the timekeeping can be accurate to the minutes and seconds, and after having a watch, it is much simpler to talk about the time, such as what time it is, or even a few minutes and seconds, as long as you say it, it will be clear immediately." ”

Li Shimin nodded solemnly and said: "This thing is very good, it is of great use with the military, and it is also of great use with the people's livelihood, I Datang specially set up a sundial in the palace in order to establish the time, and countless hourglasses and carved leaks were set up under the sundial, and more than 500 people were prepared by Qin Tianjian, who took turns staring at the sundial and hourglass every day, and did not dare to be idle at all. ”

The emperor paused when he said this, looked at Han Yue and said: "But even so, there are still times when the timing is inaccurate, and now that I have this watch, I won't be sloppy in time in the future......."

"The main thing is that it can be promoted!"

Han Yue reminded softly, "My father also knows that timing is important, in the past, the Tang Dynasty adopted the hour system, and Qin Tianjian was responsible for timing and reporting, and then passed it to the palace clock, only when the bell rang, the guards in Chang'an would make a watch." During this period, after passing through layers of transmission, the farther the distance, the lower the accuracy, for example, the husband at the gate of the palace played five watches, but the gate of Chang'an will not be changed until a few minutes. ”

Li Shimin nodded again and again and praised: "Very good, very good, this watch is really good." ”

He held it in his palm and couldn't put it down, and his eyes flashed with a thick ** light.

Han Yue took a step forward lightly and said with a smile: "Father, your watch is specially made, the materials are made of gold and steel and pure copper, this kind of watch is made of two pieces, one for you to wear, and one for the queen mother to wear. ”

"Name?" Chen Shimin was slightly stunned, and then laughed and said: "This is a wonderful statement, I am the best at choosing a name." Aha, since these two watches are specially made, only I and your mother have them all over the world, which makes me suddenly have a flash of inspiration, it is better to call it the Dragon and Phoenix Supreme Watch, ahahaha! ”

Han Yue was dumbfounded, and it took a long time to roll his eyes.

"I know, I know ......" He looked at Li Shimin with a stupid face, and sighed: "At the beginning, Erchen made a red-clothed cannon, but his father named it a mighty general, and later made mines and grenades, and you named it Thunderbolt Cannon, and now these two watches are even more pitiful, and the name has a strong smell of turtles." ”

Li Shimin's eyes widened and said, "Isn't the Dragon and Phoenix Supreme Watch bad?" ”

Han Yue shook his head helplessly, and said with a wry smile: "Very good, very good, father, as long as you like it." ”

Li Shimin nodded proudly and dragged his watch in the palm of his hand.

Han Yue took half a step together and pointed: "Father can open this buckle, and then put the watch on the bowl like a bracelet, and raise his hand at any time when he wants to see the time in the future, so that he doesn't have to pay attention to the bell and the watch." ”

Li Shimin put on his watch according to his instructions, raised it from time to time to check, and muttered to himself what minute hand, hour hand, second hand, haha, it's 8:6 now......

The dignified emperor was not as good as children, but everyone present did not have a sense of inappropriateness, everyone was shocked by the magic of the watch, and at this time they all looked at Li Shimin pitifully.

"Father, father, can you try this watch for your sons?" Li Chengqian opened his mouth, and Li Tai next to him was also full of eagerness.

Li Shimin hurriedly hid his arm and said coldly: "No, don't think about it, this thing is very useful to me, I review and review it every night, and I often worry about the lack of time." ”

Li Chengqian and Li Tai hung their heads, although they were anxious like a cat scratching, but they didn't dare to ask for it.

The second and third children still don't dare, and the princes and princesses behind them don't dare even more.

The eyes of several imperial concubines were shining, and their faces also looked like they wanted but didn't dare to ask for it.

At this time, I saw the eldest grandson queen raise her wrist leisurely, suddenly came to her eyes and looked at it lightly, and pretended to exclaim: "Oh, before I know it, it's already eight o'clock, this time flies really fast." ”

When everyone heard the words, they all looked at the wrist of the eldest grandson, and it turned out that the eldest grandson also had a golden watch on his wrist, and the shape happened to match the emperor's wrist.

Show off!

The eldest grandson, this is obviously a show!

But she has the qualifications to show off, and at present, only she and Li Shimin have watches in the entire Datang.

"Sister, you can envy the dead girl!"

Concubine Yang's face was full of small stars, her eyes stared at the eldest grandson's watch, and then looked at the jade bracelet on her wrist, and suddenly sighed, and said pitifully: "It's a pity that my sister can't give birth to such a genius as His Royal Highness, my family Li Ke has not been a ......teacher for five years."

The eldest grandson raised his wrist and shook it lightly, obviously showing it to a few concubines, but he made an indifferent look on his face, and said lightly: "It's just a thing, this palace is actually not enthusiastic, the reason why I reluctantly wear it is mainly because I don't want to hurt the child's filial piety." ”

What is insincere, this is called insincere, several concubines opened their mouths, and they didn't know how to answer for a while.