Web: 1. Visit miHoYo redemption site (link below). 2. Log in. 3. Choose your region's server. 4. Enter code and press Redeem. 5. Check your Mail in-game. In-game: 1. Go to menu and choose Settings. 2. Go to Account. 3. Choose Redeem Code/Redeem Now. 4. Enter code or paste from the clipboard. 5. Press Exchange. 6. Rewards will arrive directly to your Mail. 7. Claim All when reading the mail item.