+7——+9 pad Any white weapon matched with white weapon makes the pad an enhanced knife +5 liters +6. If it fails, strengthen the knife you need to easily strengthen to +9.

+9-+10 Use the white weapon pad to disable the pad knife +6 liters +7 and then easily strengthen the knife you need to strengthen to+10.

+10-+12 Use a white weapon to pad the knife, no matter how strong it is. Let the knife fail twice anyway.

Easily strengthen the knife you need to strengthen again to+12.

+12-+13 pad with white weapon, that is, the pad knife will fail for three consecutive times. There is only one possibility, which is +6 liters +7 failures.

Then +5 liters +6 failed, then +4 liters +5 failed again, and your+13 weapon came out.

+13-+14 You can use a purple weapon pad without much high-grade purple, which will fail three times in a row.