CentOS 7 installed in English language
Where the product detects an unknown locale, it is displaying Chinese characters
Even if the browser itself may be displaying in English, if there is another language of higher priority that is not supported, this will cause the characters to appear.
This has been Fixed in DOI 1.2.3 Service pack 0001, where any unknown locale is discovered, the product will force display in English, including date format.
Details on language priorities for websites: