Children of the Star: Reverse Journey

Ye Xinglan was just an ordinary alien maintenance worker. One day his escape capsule accidentally crashed into the desert of the earth. In order to repair the spaceship, he disguised himself as a human, but accidentally sneaked into the science and technology expo and was regarded as a genius scientist. When he finally collected the parts and prepared to go home, he discovered that his home star civilization had long been annihilated in time and space - and the Earth actually contained the creation key that the Interstellar Federation had been looking for for thousands of years.