Caught During the College Entrance Exam, My Uncle Asked What I Was Doing in Africa

This book is also known as "The Story of How I Am Superman King and Still Serving as Someone's Dog".

Despite being an invincible superhero, he always seems so frustrated. He went back to China to take the college entrance exam, only to be taken away by the national security police on the spot. When he's unhappy, he uses his intimidating presence, but instead of exuding domineering power, it just feels awkward watching others show off…

Why do I feel so frustrated as soon as I return to China?

Is this world only a few kilometers apart? Given the technological level of this world, the time it took for the delegation to arrive is only enough to make one suspect that the protagonist has their own transportation channels (?).

They're both kings abroad, yet they're employed domestically.