"The half-minute countdown is about to begin. In half a minute, this ship will dive to a depth of one thousand meters. Please prepare for all crew members. If you have any discomfort, please enter the medical cabin in time or use personal survival devices."

In order to soothe the hearts of every crew member, such subsidence announcements were personally issued by Captain Feng Ting.

Before this, the submarine had been moving at a depth of more than 800 meters for a whole day, but in fact, this depth was already very challenging.

Although Lu Yu built the Expedition as solid and would not be damaged by this depth of pressure at all, the crew members inside the Expedition could not adapt overnight.

Before, every time the submarine dived at a depth of 50 meters, the submarine would stay at the same depth for as few as tens of minutes and hours, so that after reaching a depth of 800 meters, the Expedition directly maintained a deep sail for a day and night.

Some crew members are very talented, and they still talk and laugh and jump even under high pressure.

But most ordinary crew members began to have some reactions caused by high pressure, such as chest tightness, nausea, and tinnitus, and a few people had to enter the medical class and lay on the hospital bed and soak in the patient.

Physical discomfort is on the one hand and on the other hand psychological stress.

In the past, people were used to life on land, and most people did not regard diving into the deep sea as a huge challenge.

However, in the environment of high pressure under the sea, communication between people becomes less smooth. On the one hand, the transmission of sound will change and obstacles in the high-pressure environment. On the other hand, in the negative environment, ordinary people will feel that their activities become weak.

Lu Yu walked in the passage and kept observing and asking about the feelings of each crew member he encountered. Now these problems are related to his failure to consider the survival device more thoroughly and comfortably.

In the power equipment cabin, there were five people in a mechanical maintenance team. Except for the team leader, the other four people were in poor condition and had to sit on a chair and hang a breathing mask.

This does not mean that oxygen inhalation can improve the current environment. After all, the ventilation design in the cabin is still very mature.

In addition to compressed air, the gas breathed in the breathing mask is also mixed with some scent of grass and trees that have a calming effect. In addition, the temperature is lower than the air in the cabin, which can give the crew a little psychological comfort.

Fortunately, there was no problem with the equipment in the cabin at this time. The energetic maintenance team leader tried hard to sing some crappy songs and said some cold jokes to help his companions distract themselves, but his voice became a bit absurd in a high-pressure environment, which made the atmosphere even more awkward.

Lu Yu walked into the cabin and pressed the maintenance technicians who were about to get up and salute, and also stopped the maintenance team leader from continuing to make annoying sounds.

"I know everyone feels uncomfortable, which is why before we actually cross the wormhole, we have to conduct a long sea trial to get everyone to adapt to the arduous combat environment.

Although I don't want everyone to feel pessimistic, to be honest, based on the information we have already discovered, the environment in the prophet's field is definitely more difficult than the current conditions.

So I need you to tell me your physical reactions and psychological feelings in detail so that I can find a way to solve some problems.”

Lu Yu's mellow voice in his usual days became as sharp as a child at this time, which made him unable to help but smile.

A crew member said: "Mr. Lu, if it is just some pain in the body, it is actually easier to tolerate, but when everyone communicates, their voices become weird, and their vision is also affected, and everything is distorted.

This feeling is like being in hell, which really makes people unable to raise their minds.”

"Yes...and in this case, no one is willing to speak. I feel that only the sound of the machine running and the sound of the ocean currents in my ears are heard.

The most uncomfortable thing is that when I sit here and close my eyes, it is easy to imagine the scene where monsters swim around us and can attack at any time."

Another crew member added.

Lu Yu nodded: "I understand what you mean. Next, I will ask Dr. Chen Tianming to collect everyone's physical data. Believe me, this situation will improve soon."

Lu Yu's words are not a placebo, but a real effect.

Soon Chen Tianming began to collect the physical condition of each crew member in detail, while Lu Yu became busy in the factory.

The solution to the matter cannot be achieved overnight. After careful analysis, other technologies to improve the comfort of the Expedition still require Lu Yu to spend a lot of effort on research and development. However, there is one thing that can achieve twice the result with half the effort and greatly alleviate everyone's pain.

That is to quickly solve the problem of communication. The idea of ​​solving this problem is very clear, that is, to ensure that the voices of the crew can be transmitted without distortion as much as possible, and to increase the difficulty of communication between everyone from difficult mode to simple mode, it will definitely relieve everyone's mental pressure to a great extent. After all, humans are social animals, and only when they feel the existence of their companions without barriers can they have great courage.

This does not even use any breakthrough technology. The already mature bone conduction acoustic technology on the earth is very suitable for the current environment.

Use a bone-conducted microphone to receive the sound, and use bone-conducted headphones to listen to the sound. By changing the medium of the sound transmission, we can avoid the impact of high pressure on the sound.

However, in the actual manufacturing process, Lu Yu could also feel the exquisiteness of acoustics. It was not entirely metaphysical in terms of sound quality and tone adjustment. Even though he had already mastered the relevant knowledge and technology tree, without special production research, the sound reduction of the headphones and microphones produced did not achieve perfect restoration.

But this is a drastic improvement over strange sounds that do not use equipment or use ordinary sound equipment.

In fact, when Lu Yu distributed the first batch of bone conduction equipment, everyone in the leadership of the Expedition was helpless. This kind of thing should have been considered in the early stage of the watering, but in the end it had to be solved by Lu Yu's strong manufacturing capabilities.

If it weren't for Lu Yu's competition, I'm afraid everyone would have to overcome this difficulty with a hard and simple spirit. Fortunately, before entering the combat stage, the Expedition still had to conduct a long sea trial. We still have some time to solve these problems that were not fully considered on land.
Chapter completed!