In 4040, earth civilization and alien civilization established contact.
In 4054, alien civilization tore up the 14-year-old treaty, became hostile to humans, and was determined to occupy the earth.
All countries immediately entered a state of preparation for war.
Later adopted by agreement:
Each country has at least one strongest team, named the representative team.
The representatives of China are of course one of the most talented people in the world.
Purpose: Pay tribute to the heroes and martyrs