In the book, Ran discusses nine topics related to invasive alien species with vivid examples, including the rapid outbreak of red imported fire ants, the idea of introducing red swamp crayfish as a resource — and the industrial and market problems during the process — and the result of people releasing pet red-eared turtles into the wild.
Xu Yijuan, a professor at the South China Agricultural University, says: "The invasion of alien species is an important cause of the loss of biodiversity. Since the 1990s, limiting invasive species has become an issue of consensus for the protection of biodiversity.
