In a Different World with a Smartphone - Chapter 23: The Underground Ruins and the Crystal Demon

This is a ‘rebirth’ story where Chen Rong, the heroine, finds her second chance at life after burning herself to death. Set in the Eastern Jin era when bureaucrats and their lofty yet equally hypocritical and oppressive ideas once ruled the empire, Chen Rong is made to use her past life’s experience to survive and hopefully find happiness this time around.

- Description from Novelupdates

The black dragon that rose from the depths of the South Sea unleashed an apocalyptic tsunami... Flame demons destroyed city after city made of steel and concrete, calmly departing from the center of nuclear explosions... Alien gods attempted to rule the entire galaxy...This is a future world where human technology is highly advanced.It is also an era that sparked a frenzy of Life Evolution in the Martial Path.Li Yuan, a Martial Path student on the verge of taking his college entrance exams, struggled to advance in this world while harboring the peculiar Divine Palace capable of envisioning the galaxy.Years later.“My current flying speed is 122,682 meters per second, and my power burst is...” Li Yuan flew at extreme speeds through the atmosphere about 180 kilometers above the surface of Blue Star, his cold eyes fixed on the massive creature at the dark void's edge, resembling the mythological dragon: “You, must be the strongest among all the invading Demigod life forms.”“It's just unfortunate that I can now be called... Martial God!”

Having being plagued by same dream for the past six years, Chu Yanshen discovered a little boy who looked just like him out of the blue. It was only then did he, Chu Yanshen, learn that he had been deceived by the little lass six years ago…

- Description from Novelupdates