I'm afraid Xperia XZ does not support MHL or HDMI so this type of connection is not possible.

While the phone doesn't support MHL it's still possible to stream for example films from the phone to your TV. This is possible to do wirelessly using a Chromecast, Miracast (Screen Mirroring) or DLNA.

-Official Sony Xperia Support Staff

官方回答是沒支援MHL or HDMI
只能透過無線Chromecast, Miracast (Screen Mirroring鏡像)