Tian Rui Shuo Fu

Payload specialist, Tang Yue, who is a mechanical and electrical engineer by training, is left stranded on Mars when he receives news from his AI robot assistant, Tomcat, that Earth has exploded. He believes himself to be the last human in the Universe.
Turns out, he is only the last man in the Universe. Botanist, Mai Dong, had been left on the United Space Station (USS) orbiting Mars, to await Tang Yue's ascent to the USS before they make their journey back to Earth. But now, it's impossible.
Join the trio's quest for survival as they attempt to unravel the mystery of Earth's disappearance.

Dead on Mars

CKtalon

Tang Yue and Tomcat had lost count of the number of times they fell. Tomcat was too short, and holding up Tang Yue meant a high center of mass. A slip by Tang Yue was enough to pull Tomcat down. As they stumbled their way forward, Tang Yue had already lost his bearings.

Tang Yue and Tomcat collapsed to the ground.

Tang Yue breathed heavily as he opened his eyes. It was still pitch-black in front of him. He still wasn't able to see anything.

"We've walked a total of 6,475 steps. That's the effective step count. We aren't counting the times we rolled and fell to the ground." Tomcat lay beside Tang Yue. Its body was snow-white in color. "Based on the distance, it should be here."

Tang Yue struggled to turn his body to face up. After resting for half a minute, he found the strength to speak.

Sol Three Hundred and Forty-Two, Don't Die on Mars