Why don't the Cart, Checkout & Register translate?

-- url of the page with the problem -- : www.vivatec.hk
-- HikaShop version -- : Latest Essential Edition
-- Joomla version -- : x2.5
-- Error-message(debug-mod must be tuned on) -- :

I have translated most of the menu and modules but when I switched to Chinese from English, the cart, checkout & registration is not translated to Chinese, may I know why and how to solve it?

Example - Cart in the middle is still English
www.vivatec.hk/index.php/zh/

Hi,

I cannot see the problem on your website. I do see everything in Chinese on your website, including all the menu items and the HikaShop cart and checkout.
Maybe I didn't understand where to look. Can you do a screenshot of the problem you're talking about ?