The link between the Cisco switch and Huawei switch is down.

Hi, friend!
If a Cisco device interconnects with a Huawei device, the interface is Down. Please check the following.
1. Disable Huawei STP.
2. Check whether the physical layer is normal.
3. Check whether the interface configuration is correct.
4. Disable interface auto-negotiation.
5 If all the above aspects have been checked, it's still not possible. You are advised to collect information for analysis.