k_optimistic2020 use to be that you claim 5 or 10 spirit stones for a certain amount of time you read (all books cumulatively). If I remember correctly, it was after reading 5, 30, 60, 120, 240, 360 and 600 minutes. Spirit stones=coins in previous system. So you could get up to like 10 free chapters weekly. And everyone had equal access to this feature.