You can run the CE12800, NE40E, AR1000v in EVE-NG, please refer to Run CE12800/NE40E in EVE-NG - Huawei Enterprise Support Community
Besides, you can also use the PNETlab PNETLab installation / adding Huawei AR Router Image - Huawei Enterprise Support Community
Sorry for that, but the Huawei images cannot be integrated into GNS3. However, you can integrate the USG firewall image into EVE-NG, which is another simulator for Cisco. But only the USG firewall can be integrated into EVE-NG, no other images can be integrated into EVE-NG.
If you want to experience the connection between EVE-NG or GNS3 via eNSP, you can try to add the cloud on eNSP and connect the cloud with the virtual NIC.
The same action should be undertaken on GNS3 or EVE-NG. After that, you can experience the connection between eNSP and GNS3.