Book by Liu Cixin published in 2014
The first book in the series. Somewhat slow start, but it really sets the frame for the following books. The second half of the book is fantastic and I started giggling with excitement that there were two more books after it on the last 100 pages. To intrigue, but not give too much away: Imagine getting contact with another species, what could happen on earth? This book is a fascinating journey into this.