Cixin Liu Collection 3 Books Set (The Supernova Era, Hold Up the Sky & Ball Lightning):

The Supernova Era:
Eight years ago and eight light years away, a supermassive star died.Tonight, a supernova tsunami of high energy will finally reach Earth. Dark skies will shine bright as a new star blooms in the heavens and within a year everyone over the age of thirteen will be dead, their chromosomes irreversibly damaged.And so the countdown begins.Parents apprentice their children and try to pass on the knowledge they'll need to keep the world running.

Hold Up the Sky:
In Hold Up the Sky, Cixin Liu takes us across time and space, from a rural mountain community where elementary students must use physics to prevent an alien invasion; to coal mines in northern China where new technology will either save lives of unleash a fire that will burn for centuries; to a time very much like our own, when superstring computers predict our every move; to 10,000 years in the future, when humanity is finally able to begin anew; to the very collapse of the universe itself.

Ball Lightning:
On his fourteenth birthday, right before his eyes, Chen's parents are incinerated by a blast of ball lightning. Striving to make sense of this bizarre tragedy, he dedicates his life to a single goal: to unlock the secrets of this enigmatic natural phenomenon. His pursuit of ball lightning will take him far from home, across mountain peaks chasing storms and deep into highly classified subterranean laboratories as he slowly unveils a new frontier in particle physics.