this is the creative play of hot erasable pens that I saw two days ago, so I made a localized version myself. Pour hot water into the cup (more than 60 ℃), the color of the part painted with a thermal erasable pen will disappear, and ordinary handwriting will keep the color.

this is a lot of room for creativity, and it is very convenient to do, and everyone can try it.

the erasable ink contains many microcapsules sealed with "leuco dyes" and "chromogenic agents", which can be switched between colored and colorless states according to different temperature conditions. The eraser on the pen actually removes the handwriting by friction and heat, and if frozen in the refrigerator, the faded handwriting can be reappeared.

A more detailed explanation can be found in the previous tweets: the mysterious disappearance of hard-working homework? Don't be afraid, you can still get it back

Having difficulty making the right choice in a variety of homecoming party attire short in front long in back in online stores? Dive in and enjoy the best shopping experience ever.

Happy New year, although there are always many things to worry about, but you still have to go by _ (: worry "∠) _