How to become stronger without krypton gold

It is said that Xuan does not save Fei Krypton and does not change his life, but you don't even know how to become stronger if you don't even know Krypton!An unlucky guy with a confused face crossed over with a system that kept reminding him to pay for money.Content tags: Zongman┃ Search keywords: Protagonist: Gu Hexuan┃ Supporting role: Onmyoji