[Western Crossover] Who on Earth Is Li Hua?

One day.

Tony Stark was researching armor at Avengers Tower when he received a letter that greeted him warmly as "Tony."

The letter earnestly expressed regret that he was bad at math, offered him encouragement, and clearly listed five ways to improve his grades.

Tony Stark, MIT honors graduate, one of the greatest scientists of the century: ???

One night.

Batman was beating up street thugs in a dark Gotham alley when he received a letter.

It warmly addressed him as "Bruce," earnestly expressed regret that he couldn't control his emotions, and logically listed three suggestions, wishing him luck making more friends.

Bruce Wayne, master of emotional control, member of a certain league, and a man whose true identity is still unknown to most people: ???

At a certain gym.

Captain America was hitting a punching bag when, inexplicably, he received a letter.

It warmly addressed him as "Steve," expressed regret that he didn't know enough history, and enthusiastically invited him to visit the Smithsonian Museum.

Steve Rogers, living legend, a figure in history books and museums, and a World War II hero: ???

It seemed they weren't the only ones who'd received letters. Plenty of other people had gotten letters from the same sender.

They were all signed, Li Hua...

And the grammar was a complete mess from beginning to end_(:з"∠)_..

Meanwhile, across the ocean in China...

"Where the hell did my English essay go this time? Damn it! (╯‵□′)╯︵┻━┻!"

I posted this blurb on Lofter before, so please behave yourselves. Thanks :)