Oh, it's about a Chinese soldier who came to the United States after being voluntarily discharged for some special reasons.
Perhaps before coming to the United States, his numerous achievements in China attracted the attention of S. H. I. E. L. D.
Oh, later...
The heroine gains the ability to predict future dangers
Some time before danger comes, the heroine will pick up a pen and paper to draw or write some pattern on the paper unconsciously or in her sleep!
All this is a series of things that happened after he came to the United States!
Purpose: To promote Chinese women... Bah! The bravery of female soldiers!