Most people know about zombies from Hong Kong zombie movies. They wear clothes with blood and stains, their bodies are stiff, their faces are pale and their eyes are full of death. They jump and move forward step by step, which is chilling. Old coins in the cryptocurrency circle, such as ICX, Luna, RVN, and STORJ, are like zombies lying in coffins, waiting for the right time. One day they will jump out and eat people. Retail investors can't guard against them. It's too scary.