Messages from tiande

"TianDe" is the name of a company that has been sending SMS messages to this person. The content of the messages seems to be related to registration and confirmation codes for accessing some sort of service or application provided by TianDe. It's unclear what exactly this service or app might be, but it appears that users need both login credentials (a phone number in one case) as well as specific verification codes sent via text message in order to use it.