2. Method 2: First close the main water valve. You can use a screwdriver to insert it under the faucet handle and pry it from left to right. You have to pry at the same time, slowly and evenly, so as to remove the valve core.
3. Method 3: First close the main water valve, unscrew the blue cover on the right handle, loosen the screws inside with a cross screwdriver, remove the handle, and the valve core will be exposed, and then unscrew the valve core with a adjustable wrench.