Under the Long River

"Those eyes that once looked at them at night have turned into dust." When human beings were rejoicing for finally landing on Mars, bursts of roars resounded through the sky, and broken battleships slowly fell in the yellow-brown sky, reflecting into the eyes of people more than 50 million kilometers away. Why do interstellar battleships from unknown civilizations appear over Mars? Why do the huge mechas in the wreckage look so uncoordinated and weird? Can mankind survive safely in the face of unknown disasters? Under the stars, only the long river of civilization flows through time and will never be erased!