The wreckage of China Eastern Airlines crash was scattered widely, and the crash area was razed to the ground. What are the difficulties in rescue work?

The wreckage of China Eastern Airlines crash was scattered widely, and the crash area was razed to the ground. What are the difficulties in rescue work? No remains have been found so far. I'm sorry to say that there is a high probability that the body was shattered and distributed near the plane crash. Impact energy during landing. The height is 8000m, the speed is 800km/h, and the total mass is calculated as 50000kg. The kinetic energy at an altitude of 8000m, after inelastic collision, almost all kinetic energy is absorbed by the aircraft itself and passengers. Compared with the fuselage, the biggest debris after the disintegration of the current aircraft is also very small. The difference between human and fuselage injuries. People's pain is not comparable to that of the fuselage. As long as the debris is so small, it is not difficult to imagine that the human body will cause debris. In addition, the plane exploded and burned in addition to collision. In addition to the burning of the plane itself, the shapeless wreckage also burns. Imagine: so violently hitting the ground, the nose mechanically contracts to the tail, and the pressure in the cabin suddenly increases to more than N times. Just like a balloon, the cabin bursts instantly, and the body splashes into small pieces everywhere, so does the human body.

Coupled with the explosion of jet fuel, the debris at high temperature is rapidly incinerated, deformed and dispersed, thus forming the present situation. In the case of free fall, the speed of the plane falling to the ground is about 340 kilometers per hour, but according to the flight data, the engine should be working normally when the plane falls, which will accelerate the fall. According to the relevant data on the network, the landing speed should be above 500㎞/h, and the whole plane will become fragments when it hits the ground, not to mention the human body! ! Coupled with the fire caused by the explosion, it can be said that basically nothing can be found! I really can't imagine how desperate they were when they fell to the ground in the plane for three minutes. It was really painful to see the video of the plane falling almost vertically and the body could not be found. It is conceivable how much mental and physical pain the passengers suffered at that time. We ordinary citizens can only learn about the progress of search and rescue through the internet. We really look forward to getting up in the morning and seeing the news report: the survivors have been searched and rescued! ! May there be fewer disasters in the world.