> For the complete documentation index, see [llms.txt](https://srokyeung-1.gitbook.io/srokyeung/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://srokyeung-1.gitbook.io/srokyeung/in-app-system.md).

# In-app system

- [Daily Earning Mechanism:](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/daily-earning-mechanism.md)
- [Buy-to-Earn Framework](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/buy-to-earn-framework.md)
- [For Tourist](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/buy-to-earn-framework/for-tourist.md)
- [Customer](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/buy-to-earn-framework/customer.md)
- [Exp-Utility Framework](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/buy-to-earn-framework/exp-utility-framework.md)
- [Fee & Tax System](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/fee-and-tax-system.md)
- [Mystery Box](https://srokyeung-1.gitbook.io/srokyeung/in-app-system/mystery-box.md)