The sea animal skin raincoats that Ye Qiong took back from the Na Ning tribe's dam base are still placed at the giant sword base.
However, Ye Qiong did not plan to develop the hot air balloon at the Jusword Base.
Hot air balloons play a very important role for today's tribes, both in daily life and military aspects.
Therefore, the development must be kept as secret as possible. The giant sword base is located in the Dinglong Mountains, although it is not open to the Na Ning tribe.
But if a hot air balloon is to be developed, it will inevitably come into the view of the Na Ning tribe and even the Red Flame Leopard tribe.
Just one glance at this kind of thing can immediately change the final direction of a war.
If not discovered, it is a strange card that can play a huge role in both offense and evacuation.
But once it enters the enemy's field of vision, as long as one person sees it and describes what it is like, he can make corresponding adjustments.
The wooden house base and waterfall base are not suitable for the development of hot air balloons because many warriors and tribesmen from the Na Ning tribe are now involved in their construction.
The central tribe is actually not suitable because there are too many people, so the most suitable place Ye Qiong thinks of to develop hot air balloons is the timber base in the south.
Regarding the southern lumber base, Ye Qiong's plan was actually to focus on heavy industry. With the development of the tribe, Kuang Beili's blacksmith shop and cold weapons were no problem in the central tribe.
But nothing else will work. Ye Qiong has now got the crooked grenade out of the giant sword base.
No matter what, the tribe's research on thermal weapons must be put on the agenda.
The research on thermal weapons cannot be placed in the central tribe. Ye Qiong does not want the central tribe to be destroyed one day because of his own research.
So far, the most suitable place is the southern timber base, which is rich in timber resources and not too far from the coal mine base.
After the mountain road between the central tribe and the waterfall base is built, the southern timber base will also lose its role as a transfer station. At that time, it can continue to develop into the southern dense forest area with peace of mind, and build it directly in the depths of the dense forest. A hidden military heavy industry base is definitely a good choice.
The kind that can be fully developed...
What needs to be careful is to set the dense forest on fire when the time comes. After all, if the forest fire spreads, it will be very troublesome. Under normal circumstances, it is difficult to put out.
This is also an issue that must be treated with caution.
Under the cover of night, there was no sound in the big cave. During the day, some flying birds wanted to fly back, but after seeing the Gale Golden Eagle on the platform from a distance, they decisively turned around and flew away.
After all, spring has begun now, and they have woken up from hibernation and need to eat. There is no shortage of food on the ground, so it is not difficult to find a new place to stay.
The bonfire swayed, and the firelight shone on the wall on the left side of the cave, extending upwards, and some lines on the roof of the cave were vaguely visible.
Inside the big hole, the smell of blood has almost dissipated, and now there is a faint smell of rust. This big hole, which has been forgotten for who knows how long, is illuminated by the wooden barrel grease lamps. , once again entered the human sight.
Hua Huangji led the soldiers and five forest apes to lay wooden barrels and grease lamps into the big cave.
One is placed every thirty meters, and they are placed on the one-meter-high wall in the left area. At this time, about twenty have been placed, which is a depth of more than six hundred meters.
Ye Qiong did not participate in this work. At the same time, he also told Huahuangji that he would withdraw as soon as possible when encountering any situation.
Early the next morning, in order to more intuitively estimate the depth of the large cave passage, Ye Qiong rode Thunder for several laps in the area connected to the Dinglong Mountains above the large cave.
Counting from the entrance of the big cave, according to visual inspection, the embedded distance to the 10,000-meter peak of the Dinglong Mountain Range is about two kilometers.
Last night, Huahuangji had led the soldiers and forest apes forward more than 600 meters inside, and the barrel grease lamp had also been kept on.
By the time Ye Qiong rode Thunderbolt and flew back to the entrance of the cave, the team had already assembled.
Ye Qiong asked the soldiers to check the supplies and equipment, and then left two soldiers to guard the entrance of the big cave. Then he led everyone and the forest ape into the big cave and began to walk towards the depths of the big cave.
Six hundred meters later, the large cave once again fell into darkness. Although it was daytime, the natural light from the entrance of the large cave could not shine here at all.
The torches and lantern arrows came into use again, and the forward speed began to increase.
The feeling now is like passing through an underground tunnel, but this underground tunnel is much larger than the underground tunnels used for cars and trains.
The light of the flames could no longer shine to the top of the cave. Everyone concentrated on the left side of the cave again and began to move forward cautiously.
The last warriors each carried a box of barrel grease lamps on their backs.
Now every thirty meters forward, a soldier placed a wooden barrel grease lamp on the ground and connected it to the row of wooden barrel grease lamps at the entrance of the big hole.
The further they walked in, the more depressed they felt. When they looked in from the entrance of the big cave, they felt that the big hole was straight. However, after going deeper, they realized that it was not. There is a very small arc.
If you look back now, you can no longer see the natural light at the entrance of the cave. If it weren't for the lit wooden barrel grease lamps behind it, it would be in an absolutely dark environment.
When we were at the entrance of the big cave, we could still hear the sound of the wind and the roars of some monsters outside. Now that we have entered the depths of the big cave, there are only the sounds of burning flames and the footsteps of people around. If everyone stops now , everyone's breathing can even be heard.
Very quiet.
After walking for nearly a kilometer, as Ye Qiong shot out a light arrow again, the scene in front finally changed!
"Whoosh..."
"when!"
The arrow, like the previous lantern arrows, streaked through the air with a silvery white stream of light, but this time it did not land directly, but hit something while it was still in the air.
With the sound of a metal collision, the light arrow burst out into a small ball of fire. It was the kind of ball of fire that exploded after being violently blocked by the sparks that had begun to burn in the fire!
