EDIT: Apparently this was already found, my bad guys lol
I FOUND A GREAT EXPLOIT!
If you have any extra scrolls, you can sell them to pawn shops for some cash. In Niaowu, you can exchange 4 specific books for the Reverse Heel scroll, one of the best moves in the game in my opinion. The books are:
- Historical Records (5 Yuan)
- Later Han Dynasty (3 Yuan)
- Three Kingdoms (3 Yuan)
- History of Jin (2 Yuan)
There are two book stores that are in very close vicinity of each other that has these books. The book store in the Promenade, called Western Bookstore, just before the no running area/giant statue has Three Kingdoms. The book stand in Vendor Avenue, called Dusty Pages, next to the copper Buddha store has Historical Records, Later Han Dynasty, and History of Jin.
I did the exchange at Cash First Pawn Shop (make a left as soon as you leave The Promenade) because it's very close to the Dusty Pages stand. The Reverse Heel scroll is worth
120 Yuan! I bought like 50 of each book, exchanged all of them for the scrolls, and then sold all of the extra scroll books back to pawn shop and made nearly 5,000 Yuan!
TL;DR - 4 books worth 13 Yuan = Move Scroll worth 120 Yuan at pawn shop. Sell your extra scrolls back to the pawn shop. AFAIK this can be done an infinite amount of times. PROFIT!