Cancer is spelled the same as cancer. Why so unlucky? It's not fair!

If you believe it, you will have it. No, there is! Another name for cancer is because of a long questioning story! The story of hero's victory over cancer and hydra! The story goes like this: once upon a time, there was a snake. It was special because it had nine heads. Hydra is very powerful and hurts people. As the saying goes, there is evil when there is good, so heroes appear. When he cut off the snake head with a weapon, he found that every time he cut off a snake head, two snake heads appeared in the original cut place. With the progress of the battle, the hero found that the snake head was rebuilt not because of the snake, but because of the cancer with a hard shell, which was finally discovered by the hero. Hope to adopt!