The easiest connection between the Honor 5x and the Smart TV is via the enclosed charging cable, i.e. USB connection to the TV. Then the Smart TV automatically searches the mobile phone for photos or videos like a USB stick. Unfortunately, my TV does not find any photos/videos on the Honor 5x. This is probably due to the fact that Android has a different file system than USB sticks. So: negative answer.

Hypothetical ways are: Is there an app for the mobile phone that makes the data available to the TV in a bite-sized format?
Or: The Smart TV has Wifi under network connections, the Smart Phone also. Can media libraries be exchanged via this path?