Early alchemy thought Aristotle's four-element novel could be used as a rationale to convert elements. Let's create a new material by combining elements based on this four-element novel, assuming that all the materials in the world are made. I hope you will enjoy the elderly and children because you can be addicted with funny and novel combinations. ■ Notification ■ -This app contains advertisements. -This app stores data in local storage. ■ Permissions ■ android.permission.READ_EXTERNAL_STOR