Best answer by chillphone
If you have chromecast you can cast from the device and if you have a wifi enabled screen you can use the Huawei wireless projection.
With the HUAWEI Mate 10 Series, Huawei brought Easy Projection to consumers, enabling them to conveniently connect their devices with an external display for increase productivity. For EMUI 9.0, Huawei evolved the feature with a wireless upgrade. Users running EMUI 9.0 now have access to One-Click Projection, and Highlight and Capture on Big Screen, which let users to easily add highlights to and capture content projected on larger screens such as a TV.
In addition to Wireless Easy Projection, EMUI 9.0 supports a wide breadth of productivity features, including:
HUAWEI Share: In addition to transferring files between Huawei mobile and Huawei PC, users can now use HUAWEI Share to send files to a Bluetooth-enabled printer4;
Backup: EMUI 9.0 supports new ways for users to backup their important files. Besides HUAWEI Cloud, users may now store their backup on a SD Card, USB drive or a NAS (Network Attached Storage)5;
WPS with HiAI: The WPS productivity suite leverages HiAI capabilities to enhance its features. EMUI 9.0 automatically adjusts the alignment of documents, and can convert images and hardcopies into editable digital copies.