C' is during the dynasty of Ming (1368-1644) that the Wall took its current form. The drawings of bricks and granite work was increased and sophisticated were added. The turns of guet were redrawn and modern Canon was assembled in strategic places. The Portuguese had found a market easy for rifles and guns in China, l' one of the rare lines commercial that China l' do not have already in abundance. The Ming emperors, after having reversed the Hun domination and having expelled their Mongolian leaders of the portions of North devoted much material available and the hand-d' work to make in qu' kind; they do not return.

Throughout the centuries, the armies were in garrison over the length of the wall to give l' quickly; alarm d' invasion and d' a first line of defence. Large heaps of straw and manure used to build signals of fire were found at the time of the excavations. There was to be garrison towns small dogfish, along the length. It n' there many farms did not have or of the cities trades to provide the facility, relieving and l' food. The paths d' provisioning were on mountains along narrow paths. Aiming at conveying to the top, the cords were suspended by the posts planted in the Chinese side of the wall and of the baskets had been piled up hand on hand. The supplies must be always were with short and Chancy, in particular in l' winter.

The wall was useful well. C' is only when one dynasty had weakened l' interior were invaders come from north in d' measurement; to advance and to overcome. Such an amount of the Mongols (Yuan dynasty, 1271-1368) and the Manchus (Qing Dynasty, 1644-1911) could seize the power, not because of the weakness of the wall, but because of weakness in the government and the poverty of the population. They benefitted from the revolt of l' interior and enters the vacuum of the capacity without prolonged war. During last centuries, the Great wall was used like source as construction materials for the local farms and the villages. The air photographs show that, in the sections, only the ramparts top show - in the center of the wall is filled of sand and silt. Brutal the same conditions d' insulation which made the Great wall a triumph of l' engineering and of planning given that the problematic and slow re-establishment.