The following are official website's highlights and demonstrations.
/product/cal/taste/taste.php？ locID=440
Press the mode key.
Press shift+7+AC at the same time for the new version, and then press shift one by one. Just follow the operation.
Another way is to press SHIFT+9+3, which is clear.
If it is the old version, just hold down shift and poke the key named P in the instruction behind (there is a key in the hole behind).