Hadu was basically at home, and with the books he had plundered from the Romans, he needed enough time to dive in. With just a quick glance www.biquge.info he felt that this seemingly impetuous and absurd civilization had enough parts for him to learn, and it was at this time that he began to have a habit of collecting books.

His decision to retreat was extremely correct, after the 2nd century AD, the Roman Empire gradually weakened, slave riots occurred from time to time, and the Germanic people continued to plot to cause trouble for the Romans, so it can be said that the Roman Empire at this time was in turmoil. Especially from 205 to 304 AD, the successive emperors of Rome carried out a comprehensive persecution of Christians, and Hado, who had a great relationship with the Christian church, naturally did not stupidly run over and be stabbed. In addition, around 170 AD, the temperature in the northern part of Europe plummeted, setting off a large-scale barbarian migration movement, and it was during this period that the Ostrogoths, Burgundians, and Vandals migrated to the border areas of the Roman Empire, the Jutes, Anglos, and Saxons moved to England and established the Anglo-Saxon Kingdom, and the Franks also began to move to the Gallic region of the Roman Empire.

In Hado's possession, there were a number of architectural manuscripts, one of which was a picture album of Germanic tribes looted from the Upper Germanic province. A rough manuscript caught Hado's attention: it was supposed to be a sacrificial architectural design among the Germanic peoples, with towering towers reaching into the sky, as if the idea of ascending from the ground to heaven was in it. In particular, in the Germanic region, under the great integration of the Franks moving south, the Germanic people moving westward, and the Christians fleeing north, many Germanic tribes threw themselves into the embrace of Christianity, and their culture also incorporated the idea of building houses of worship and churches. It may be that this design is unique and eye-catching, these manuscripts were looted by the generals of the Roman legions and did not burn them directly, but were relatively well preserved, and it has to be said that the artistic level of them conquered the Romans.

However, Hadu had never seen this kind of building actually built, and of course it didn't matter, he could have expanded the space in his cave and cut out such a beautiful architectural structure - he did feel that there was not enough space in the cave, at least not for so many books and paintings.

After examining the space inside the cave for a while, Hado decided that it should be expanded from the back of the living room, first by enlarging the ceiling area, and then digging back down enough space to temporarily store the things he had brought back from Rome at the entrance of the cave. That's what he thought, that's what he did, and then he made a low stool, sat there and read a book, and from time to time went to the deep cave to scratch a few times, and put the knowledge about carving in the book into practice. In the middle, Hadu did not have much time to come out of the cave, and the clan still sent children twice according to the previous agreement, and Hadu also inquired a little about the outside world, only to know that a lot of things happened during the time when he did not come out: Christians built many churches in various places, and these vaulted buildings brought them enough spiritual comfort; I heard that the proportion of Christianity circulating in Rome was even higher than that of the Roman gods, in order to respond to the call of Roman citizens, Constantine the Great said that he would forgive the persecution of Christians and establish Christianity as the state religion; the demon church was also developing in a big wayThey had chosen to establish their own small protectorate on the banks of the Tiber River northwest of the city of Rome, and had heard the news from the Dnieper branch of the Demon Church a few years earlier that a tribal army of tribes, very good at horseback and hunting, had moved from the northeast, and that they were a horseback people called the Huns, according to reliable sources, and that the Visigothic rebels had marched southeast along the Danube, and finally advanced to Adrianople, near Constantinople.

However, these changes did not affect the peaceful scene of the "Falie" mountain range, after the construction of the moat and the city wall, Hadu also began to transform the mountain, set up a continuous group of mountain caves, although the space is not wider than his own cave, but the residents and storage are completely sufficient, and can also carry out agricultural and mulberry operations in the cave group, forming a small group of agricultural groups. Additional reinforcements were made to the mountain fortress and the various outposts, the towers were strengthened, the most advanced mechanical components were used, and pre-set point-strike trebuchets were erected in many places, making the defense even better than before.

Hadu has also undergone a small upgrade of the equipment of the guards, but with his ability to manipulate the extension of material forms, he does not have any brains to create more powerful weapons and armor before the arrival of new material research ideas.

In order to bring a more convenient environment for the tribesmen, and to be able to repair the city when Hadu was not outside the cave, Hadu made a complete set of labor-saving construction machinery, many of which can be operated with one hand, and can carry stones and steel frames quite accurately without effort. Ore excavation and smelting and casting equipment has also ushered in a wave of small-scale improvements, not only the safety has been greatly strengthened compared with before, but also the efficiency has increased a lot. At least, the people don't need to go down into the deep mines to do dangerous mining operations themselves, as the automated gathering and ore identification machinery developed by Hado can do the work.

However, it may be because of the premature promotion of automation consciousness in the tribe, the tribe has become more lazy and lazy, not only the overall production efficiency has decreased a lot, but the fertility willingness has also dropped to the freezing point - some tribesmen even complained: why Mo Mohadu does not make some "automatic childbirth" machinery, which is not only labor-saving and worry-free, but also can ensure that there is enough population. Of course, this complaint did not reach Hadu's ears, but was directly blocked by the guards, so that they would not let the low remarks of these ordinary clansmen pollute the audio-visual hearing of the legendary leader.

With no outside voices coming in and Hadu reluctant to go out to inspect, the development of science and technology in the tribe came to a halt, and after three generations, the new people would only use the old machinery, but would not repair and maintain it at all. As a result, these sophisticated machinery broke down one by one, until later there was no construction machinery available at all, and no one repaired the city wall and moat, which eventually led to the congestion of the tributaries and the collapse of the city wall due to moisture.

And at this time, the north suddenly stirred up billowing smoke and dust, and according to the outpost, the Xiongnu army was close at hand.