Mc wants to retrieve the sword box set from a city . He moves from city x to y . His enemies attack. He knows such will happen. So does his pops. While mc lives and enjoys life, his father's soldiers die like dogs. And , the drama tries real hard to make you think the mc is avatar of Righteous God, always ensuring justice . lol

As there 's the saying, kings fight , normal folks die. 

Mc should've listened to his pops from the get go. But he's his own man, wanna do things in his own way. Result ? His soliders die en masse. But mc is a just wise righteous person ! He's just dumb.
The drama tries hard to create intelligent villains. But, mc is in trouble , all those villains make foolish mistakes.

But overall the show is good, you'll enjoy it and have a good time.