I'm sorry for the claw machine.
The book friends in the group just now reacted that the anti-piracy mechanism is very unfriendly to claw machine customers, and unless the book is deleted and re-written, you can't see the real chapter
I would like to apologize to all the claw machine users, I have not considered it.
Since there are many constants, and they still hinder the reading of the claw machine, then I will not prevent piracy for the time being, and wait until I think of a feasible solution. (To be continued.) )