I made it public because I just wanted to prevent those fraudsters from using this method to sell it to more people. So I expected to receive a lot of feedback, but I still decided to release it. Everyone should know!
1. You must have a vehicle aircraft with storage function, and head to the auction house in Hack Village (prepare the items you need to duplicate in your backpack in advance). Use a tool that can control the priority of the game's network to disconnect the network, for example: NetBalancer. After disconnecting the game network, put the items you need to duplicate on the shelf, move them to the vehicle storage, and quickly switch to the vehicle storage. Press F again to quickly move the items to your backpack.
2. After completing these steps, restore your network, exit to the main menu, and re-enter the server to go to the auction house to cancel your order and retrieve your own items. Move to the vehicle storage and immediately respawn your character. When you return to the original location, you will find your corpse backpack. Press E to quickly put the items into the backpack to complete 80% of the operation.
3. Next, ride your vehicle back to the Haga Basin. Long press F to quickly store the items and respawn at the same location. You will find that nothing drops, and items will keep appearing repeatedly in your backpack. This indicates that you have succeeded! Enjoy it!
Don't spend any money or trust anyone. They will only cheat your money!!