That was a one time payment. Another example of America exceptionalism assuming its a periodic payment like paying rent. look how they give money to publishers who then give back crumbs to the authors themselves.
You break you pay .
That’s why in the western world you got book publishers . They have lawyers etc .If you prefer Chinese way : laugh at anyone who is taking about copyright , whether that a book , a model , or manufacturing secrets in eu , us or whatever sure .
A family business of my friend in eu was destroyed due to stealing until every single bolt position design of their system by China . They had no legal protection .
Keep calling rule of law vs no such rules an American exceptionalism .