I can't seem to find information online for how to copy a Genshin Impact installation to another computer. My internet speed is bad, so instead of downloading it again, I think it would be more feasible to copy the game from my PC to my laptop.
This should work if you copy the folder of Genshin impact to an external hard drive first then copy and paste it to your laptop. Steps below:
1.) Look for the folder where your Genshin Impact is installed
2.) Copy the whole folder and paste it to your external hard drive (provided it's connected to your PC)
3.) Paste to your laptop hard drive
4.) Create a shortcut for the Genshin Impact launcher
5.) Look for the config file inside the Genshin impact folder
6.) Change the location under game_install_path to where you saved it in the laptop (example C:/GAME/Genshin)
7.) Make sure to install Microsoft visual C++ 2005 up to Microsoft Visual C++ 2019 at least
8.) Launch Genshin Impact and play
That simply can't be done, you can't move an installed game from a PC to another, you have to download it again and re-install it.
You can't copy/paste installed programs from the programs folder, as when a software/game is installed the files are spread throughout the operating system, in the registry and so on...