Register Genshin account on another device without losing the game data?

I play Genshin Impact on my laptop and I'm level 45 there, but during the holidays I want to go to my grandma's and therefore can't take my laptop with me, but I still want to be able to do my daily tasks. That's why I wanted to ask if you can log in your account on another device without losing your game data.

If you have this account (miyoh or so? XD)

Then your game data is saved online and you can switch between PC, mobile phone, tablet. Back then I continued to play on my PC and on my mobile phone for a while.

This is called miHoYo.