Is there a limit on the content of the short message?

Before sending the short message content of Unicom I hanging short service, you need to submit the template for review. The content of the template involves words with sensitive political tendency, violent tendency, unhealthy color or uncivilized words, as well as information related to pornography, gambling, loans, industrial and commercial agencies, invoices and other industries, which will be judged as illegal and non-compliant, and the platform will not approve it.