This is a different Teyvat.
This book is also known as:
“Changing the Plot Whenever Genshin Impact Gets an Update”
“About Going Off to Have Fun in Other Worlds When Genshin Impact Stops Updating, Then Returning to Teyvat When a New Version Drops”
I'm not good at writing summaries. Basically, it's half comedy and half plot.
PS: There's a bit of stupid behavior in the Honkai world that you can skip. The disciple didn't die, and nothing happened. The later parts are divided into volumes.
Actually, you can read only the Genshin Impact parts of this book.