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

"First, we need to dismantle the damaged Dawn experiment module."

Tomcat used the mouse to circle the module at the end of the United Space Station. The Dawn module was still connected to the Crystal module, but it had long been abandoned, with its power and control completely severed.

Mai Dong carried a notebook in her arms as data cables floated around her. She squeezed herself between layers of control panels as her face was illuminated by the screen's white backlight.

"Mr. Cat, the hatch is completely sealed. The system's self-checks are done. Everything is normal in the space station and Orion II."

"This is Kunlun Station. I copy you five-on-five."

"Countdown to igniting the generator," Mai Dong reported. "Raptor-02 on standby. Three, two, one… Ignite."

Sol Two Hundred and Eighty, Calamity Circle