Beautiful sky. Temperature postcard

☂ Beautiful sky Open an umbrella and wait for it to fly. Looks like black and white and odorless life, in fact, our hearts Have a beautiful sky of their own. ☂ The place where the black umbrella is, About 32 degrees, the ink will become transparent. At this time you can see the secret hidden under the umbrella! ☂ Usage: ❶ You can find friends/ family/ lover to interact There are better objects, please find her / him out If you are lonely without a friend, you need this postcard more!! Please immediately go out and hold the first person who passed you in front of you ((Please be asked not to find me ~ escape ~ ~)) 借 Use your hands to help the other person's hands rub the heat (Winter helps her/his hands warmly.) 请 Place the palm of your hand on a black umbrella after rubbing heat. ❹ Wait a few seconds... ❺ Take a look at the surprises under the umbrella 影片 Video demonstration https://www.youtube.com/watch?v=ja1Fw3uf-MU Origin / manufacturing methods Taiwan