You need to use DBI, or any other Save Manager on the Switch that still works for you.where to put that files? there is a guide?
Run the Game presently.
It will spit a Online Connection Error.
Quit the Game.
Go to DBI or your Save Manager, and find Asphalt 9
Backup your Save Game
Connect your MicroSD/Switch to your Computer
---go to /switch/dbi (or other Save Manager)/ find Asphalt 9 Save
---take Modified Save Data and Replace Files in Backed Up Save.
Go to DBI and Restore Save for Asphalt 9
Run Asphalt 9. Should now be in Chinese, and you should be able to run Offline