How to make QEMU to always on?

I am using Hetzner dedicated server with rescue system, and it is running QEMU with Windows 10 on the server. However, I have one question that I have to always open my SSH terminal on my PC at home. The Windows will be off if I close the SSH terminal. So how to make the Windows is always on even the SSH terminal is turned off?

And my QEMU setting is following the Youtube tutorial:

solved with screen command