I Guard the Country Gate with a Centenary Body

The National Games Battlefield will open on Blue Star, and each country will randomly select a player to enter the National Games Battlefield.
Players from all over the world guard a city and resist the attack of monsters.
Every time you defend a wave of attacks, players and their countries can get a lot of rewards!
If defending the city fails, every time a monster enters the city, [-] identical monsters will appear in the country represented by the contestant!
Chu Feng, who is [-] years old, has finally successfully activated the "[-]-year-old system", and can be one year younger every day and receive corresponding rewards!
However, just after the system was activated, he was successfully selected and entered the National Games battlefield!
On the first day, Chu Feng guarded the city gate alone, and received an SSS rating, and the resources in the Dragon Kingdom +50!
On the fifth day, Chu Feng fought against the beast horde alone, killing 72 lord-level monsters alone, and the life span of all citizens of the Dragon Kingdom +20 years!
The [-]th day... When players from all over the world were still defending the city, Chu Feng had already entered the dark restricted area alone, overturning the entire battlefield of ten thousand races, and three thousand white hairs fluttered behind him!
"I would like to guard the country's gate with my [-]-year-old body!!"
"Those who offend me Huaxia, even if they are far away, will be punished!!"