Traveling through ancient times to escape famine, I have a treasure chest so I don't have to wo

The fawn was also released and ran around happily in the forest.

However, Xu Ning would call it back every once in a while. The forest was freezing cold, and the deer used to live in the warm hot spring forest. She was worried that it would freeze.

Xu Ning and Jiang Yan spent three days working with the robots to clear and level the site where the ironworks would be built.

During the rest time at night, Xu Ning and Jiang Yan drew a model of the ironworks in the RV.

The southwest wind came soon. Xu Ning put the deer back into the space and took out the exchanged hot air balloon. This time she did not put away the robot, but let it follow the direction of the hot air balloon to open a passable path.

Jiang Yan was very nervous when she boarded a hot air balloon for the first time. Xu Ning held her hand considerately. As the hot air balloon took off, Jiang Yan's worldview was once again broken.

The hot air balloon was flying very fast with the wind. Through the gaps in the wire mesh, Xu Ning could clearly see that the robot below had been thrown a long distance.

The two of them looked intently at the scenery below. The tall trees looked like grass from the air.

"Aning, this is amazing." Jiang Yan turned his gaze to the hot air balloon and felt admiration for the person who designed it.

Xu Ning had nothing to do, so he talked to Jiang Yan about the principles of hot air balloons.

"A hot air balloon is actually a kind of aircraft that relies on the buoyancy of hot air to fly. You see, the super-large air bag on top is filled with hot air, and we rely on this air to bring the entire hot air balloon into the sky.

The principle is that when an object is immersed in a liquid or gas, the buoyancy it receives is equal to the weight of the liquid or gas it displaces. In a hot air balloon, the hot air in the airbag is lighter than the surrounding cold air, so it will float up. This is the effect of buoyancy. When the buoyancy is greater than the weight of the hot air balloon itself, the hot air balloon will fly up.

How high and how fast a hot air balloon can fly depends on the temperature of the hot air and the size of the airbag. Generally speaking, the higher the temperature of the hot air and the larger the airbag, the higher and faster the hot air balloon can fly. Of course, the flight of a hot air balloon is also affected by the weather, such as wind speed, wind direction, and air pressure.

Jiang Yan listened very carefully, and Xu Ning even took out a tablet to show him so that he could absorb the knowledge more clearly.

The hot air balloon that the two of them were riding in was very large. Seeing that he was watching it seriously, Xu Ning started to circle around the hot air balloon by himself.

By the time Jiang Yan finished watching the video, Xu Ning was already observing everywhere with a telescope.

Since it went into space, Xu Ning pulled out the treasure chest and used it as a monitoring device. The purpose of Xu Ning's observation was not to prevent anyone from seeing the hot air balloon, but to observe whether there were any treasures in the deep mountains and forests.

The wind was blowing very hard, and Xu Ning didn't notice Jiang Yan coming over. He was looking intently at a withered tree.

After confirming that the plants growing on the large tree stump were Ganoderma lucidum, she immediately remotely controlled the robot to pick them as it passed by.

As soon as Xu Ning finished giving the order, she looked down and found that the hot air balloon had gone far away from the big tree. The trees in the forest blocked her view and she could no longer see where the big tree was.

Xu Ning didn't feel sorry and adjusted the telescope and continued looking for treasures. Suddenly, a pair of warm hands covered her frozen ears.