The granary of Chang'an city is built near the dongweiqiao Wharf in the north of the city. The huge Chang'an warehouse covers an area of nearly 1000 mu, and the scale is very huge.

After the grain was transported to Chang'an from the Weihe River, it was transported to the nearby Chang'an warehouse for storage. The grain stored here not only needs to meet the needs of millions of people in Chang'an City, but also needs to be transported to the whole guanneidao and Longyou areas.

In the whole history of China, grain transportation is the most troublesome problem. Limited by the means of transportation, they often transport 100 stone grains. People on the road eat horses and chew. At most, only 70% of the grains are transported to the destination.

Moreover, the longer the transportation distance, the greater the loss.

For example, it is 800 miles to transport grain from Chang'an city to Yinzhou. Under normal circumstances, it takes about 10 days to walk on the road.

More than 100 small households need to be recruited for 1000 stone grain. In ten days, these more than 100 people will eat more than 50 stone grain. Coupled with the consumption of cattle, there is only a lot more.

After being transported to Yinzhou, about 20% of the 1000 stone grain will be consumed.

This is a short-distance transportation with a short distance. If you want to transport grain from Chang'an to Longyou or beyond, the journey alone will take one or two months, and the consumption on the road will be even more terrible.

Dingzhou village collected corvee this time and transported grain to Yinzhou. Finally, as long as it can pay enough 800 stone grain in the warehouse of Yinzhou, it can be regarded as completing the task.

The extra one hundred stones of grain were their rations when they returned.

More than 30 four-wheel carriages discharged the mighty long dragon and reached Chang'an warehouse of Dongwei bridge under the surprised eyes of pedestrians on the road.

The old village is taking out the slip issued by Chang'an County and giving it to the petty officials of Chang'an warehouse. After confirming that they are the small households transporting grain this time, they begin to arrange for them to release grain.

This voucher should be stamped by Chang'an warehouse. After arriving in Yinzhou, the other party should also stamp on it to confirm the grain receipt. Finally, take this voucher to Chang'an County for handover, which proves that they have completed this year's corvee task.

Seeing that Li forgot to worry about them, the petty officials of Chang'an warehouse only came to more than 30 strange four-wheel carriages, and wondered: "Qian cunzheng, you want to transport a thousand stones this time. Why did you come to these vehicles? Are they all carriages? Has the county not prepared ox carts for you?"

The old village is smiling: "no problem, no problem. It can fit. Our carriage is big enough."

The petty official looked strange, but he didn't take care of it. He just needed to get out of the warehouse according to the receipt and get enough food. How to transport Dingzhou village has nothing to do with him.

After checking that the slip was correct, and the crossing, secret trick and stamp were correct, the petty official asked the labors in Chang'an warehouse to start carrying and loading grain.

To the surprise of the people in Chang'an warehouse, each of these carriages was loaded with thirty stone grain, which made the carriages full.

"I'm afraid I'm not going to kill these horses with so much food? The horses are from the county. If they die, you'll have to pay for them." the petty official kindly reminded.

He has been a petty official in Chang'an warehouse for many years, and he has never seen a car that can hold so much grain at a time. Even the ox cart can only transport ten stones of grain at a time. Thirty stone grain a car, it's crazy!

The old village just smiled and didn't answer.

When more than 30 four-wheel carriages were loaded, he checked around to make sure that the grain was firmly bound, stepped on the carriage, and waved with a high spirited hand: "let's go!"

All the petty officials and laborers in Chang'an warehouse stretched their necks to read jokes. I'm afraid they can't drag such a heavy carriage even if they are tired to death?

Not to mention four horses, even four oxen can't be replaced.

But when more than 30 four-wheel carriages started slowly and drove outside Chang'an warehouse, the eyes of the petty officials and the workers in Chang'an warehouse were about to fall off. The carriage really ran with thirty stone grain!

The four wheeled carriage team drove up the post road and headed for Yinzhou in the north.

This is the first time that Li forgot to worry about going abroad in the Tang Dynasty. Even the former owner of his body has never left the transfer county and Chang'an, let alone a modern man from more than 1000 years ago.

Niu Wu drove the carriage and walked in the middle of the team. Li forgot to worry and sat aside, looking around curiously.

In the Tang Dynasty more than a thousand years ago, the Northern Shaanxi plain was not the high loess slope of later generations, and the vegetation and natural environment were well preserved.

Li forgot to worry and soon found that since the simple version of the four-wheel carriage drove on the post road, it was not as bumpy as before.

These four wheeled carriages don't have any damping equipment at all. In order to avoid suffering from fart shares, Li forgets to bring a bear skin pad fart shares from home.

Bear skin is the black bear who scratched Niu Yong in Taibai Mountain.

After the black bear was killed by Niu Wu, he was cramped and skinned. After Li forgetful saved Niu Yong, the two brothers tanned the black bear skin and gave it to their husband.

However, even with this thick bear skin as a cushion for shock absorption, Li forget worry was knocked seven dizzy and eight elements just a hundred miles from Dingzhou village to Chang'an Cang.

The road of Datang is not the cement asphalt road of later generations, and the bumpiness of the earth road can be imagined.

At the thought of running back and forth for five or six days on such a bumpy road, Li forgets to worry and turns white.

Huxian Li, I'm not finished with you!

He was so hurt by Li that he had to travel thousands of miles. By this crime, Li forgot his worries and hated his teeth.

But unexpectedly, the four wheeled carriage was much more stable after it was filled with grain in Chang'an warehouse and went to the post road.

Looking carefully at the post road in front of him, Li forgot his worries and was not happy.

The quality of Datang post road is very guaranteed. With Chang'an City as the center, Datang built an extremely dense road network.

The county annals of Yuanhe County written by Li Jifu of the Tang Dynasty clearly and in detail recorded the so-called "eight arrivals" in various states of the Tang Dynasty, that is, the road conditions and mileage extending to all directions with the place as the center.

These post roads are generally paved with bluestone slabs or pebbles, and the roads are very flat. Its main function is to transport grain, March and deliver documents, which is somewhat similar to the national highway of later generations.

Since Qin Shihuang unified the six countries, the cars have the same track and the texts have the same books. After that, the wheelbases of carriages and ox carts have the same specifications and the same width.

In this way, after the wheels are rolled repeatedly, two hard ground lanes with the same width as the wheels will be formed on the post road, which is a bit like the railway track of later generations.

The wheels of a four-wheel carriage running in such a lane can significantly reduce horsepower consumption and axle wear, just as modern vehicles walk on asphalt roads.

A convoy of more than 30 four-wheel carriages in Dingzhou village ran quite smoothly on the post road. Within an hour, they ran more than 50 miles, far exceeding the speed they had expected before.

When the team stopped to feed the horse and rest the horsepower, Lao Murakami smiled brightly: "Xiao Lang, at this speed, we can go to Yinzhou for work in two days at most."

Li forgets to worry suddenly remembers an event, pulls the old village Zheng and asks, "old village Zheng, if we can reach Yinzhou in two days, we won't consume much food on the way. We only need to hand over 800 stone grain to Yinzhou. Does the rest belong to us?"