Sun Hang stepped on the sand beneath his feet, and compared to the desert he remembered, the sand here was extremely fluid. It wouldn't be an exaggeration to call it flowing sand, as one step would plunge him deep. It's no wonder Mr. Ouyang's team was stuck at this technical challenge.
Sun Hang, weighing over 130 pounds, could feel his feet and legs constantly sinking while standing on this shifting dune. He had to construct a fungal mesh at his feet, hundreds of times larger than the sole area, to decrease the pressure to a level that wouldn't sink into the flowing sand.
However, the return rocket weighs hundreds of tons, and finding a sufficiently stable support point in such terrain is difficult under limited conditions.
Over 90% of Egypt's land area is desert, but Cairo is not.
The Nile River is called the mother river of Egypt because, as once the world's longest river, it truly nurtured and nourished the human civilization along its banks as a source of life.
