The Scary Empress.

Even though she scared them she earned their respect.

And the original fact is the citizens in the country doesn't know about Star Tripod Center. They only know about the Tripod center.

Because the government is afraid that if citizens knew about the existence of the Star Tripod they will be scared. It will create fear in them. And immediate chaos will begin in the country. To avoid all this they just hid the truth.

Just because the soldiers became retarded and went crazy the government can't abandon them. They are also part of their country.

Only the people in the high social circle knew it's the existence.

Tripod is a combo of Military, naval and air forces. All the soldiers for I'm the three major forces are joined there.

Now Jin Kexin has to go there. A woman who was sent there is purely tortured to her death. Even a prostitute cannot bear it.  So sending a woman like Jin Kexin, who is grownup like a noble lady is a vicious thing.