Waking up from a dream, Qiao Xi crossed from the 21st century to Chicago in 1943, becoming a poor teenager living on the streets. World War II? For the underage Qiao Xi, it's too distant. As an orphan, the most important thing is how he can survive in this era. Luckily, he has a dimensional trading system. In this era, being a time-space profiteer should allow him to live comfortably. However, a few months later, Qiao Xi, whose life had just improved a little, watched Captain America singing and dancing on stage with a group of girls at a war donation performance, and fell silent. It's over. This is actually Marvel!