發送短信 : Invisibility cloak designed with global optimizations

 _    _     _____     _____      ___      ______  
| \  / ||  |  ___||  /  ___||   / _ \\   /_   _// 
|  \/  ||  | ||__   | // __    | / \ ||  `-| |,-  
| .  . ||  | ||__   | \\_\ ||  | \_/ ||    | ||   
|_|\/|_||  |_____||  \____//    \___//     |_||   
`-`  `-`   `-----`    `---`     `---`      `-`'