What's Wrong with a Female Cultivator of the Hehuan Sect Loving Sleep?

Huaishan Qing unexpectedly transmigrates to the cultivation world and gets bound to a strange System:

A System that raises your cultivation by sleeping with cultivators, or, in short, the Sleep System.

Sleep System 419: Host, don't panic. My name might sound a little risqué, but I'm a perfectly respectable System! All you need to do is sleep with a cultivator whose cultivation is higher than yours (just sleep, nothing else!) and your cultivation will increase!

Huaishan Qing: Mm-hmm.

419 was delighted, thinking it had found a kind and understanding Host.

It never expected its Host to go off script on the very first mission:

Beginner mission: Choose a sect to join.

Huaishan Qing: I'll choose the Hehuan Sect.

Sleep System 419: ???

Years later, looking at its Host, whose cultivation had already reached the peak of the Deity Transformation Realm, Sleep System 419 had no idea how to voice its complaint.

I told you to sleep, but I didn't mean you should actually go to bed!

Theme: Early to bed and early to rise keeps you healthy