Clint Eastwood's new film: Toilet Paper from Sulfur Island

Tian says,

Have you seen all the ads for Clint Eastwood's film - Letters from Iwo Jima?

"Iwo Jima" means "Sulfur Island". 手紙 means "mail/letter" in Japanese, however if they are read as Chinese, they mean "toilet paper".

I hope the movie studio would retitle that before marketing to China, otherwise, people would be paying to see "Toilet Paper from Sulfur Island."