Planet Earth's Mission

A very thoughtful book. There are many new and unique ideas in it, such as humans being the battlefield of aliens, polluting the environment will be punished by the environment, the concept of time difference, the Ting people using black holes to build super-light spaceships, and the environmental purification towers that are like artifacts. However, I think the significance of the appearance of the mantis tribe is to warn humans not to protect the environment at the expense of the environment. As for the fourth-generation Earthlings, they feel like a mother protecting her child (the fourth-generation Earthlings!), While the Deep Space Man wants to be a bad person and wants to teach the Earthlings bad things.

The structure is okay! The plot is a complete mess and the characters cannot stand up at all!