Written by Jiang Wanzhi & Illustrated by Zhang Yunkai 
Invisible Microworlds – War Against Viruses [EPUB ebook] 

There are mysterious inhabitants of the "Microworlds"- they are so small that they need to be seen under a microscope. They are very old and are one of the oldest life forms on Earth. They are everywhere – in the air, on the skin, and in the body… Who are they? Enter the world of microbiology and meet its inhabitants together!