Posting on behalf of @jiandan:
Jiandan, an active member of the Chinese community on discord, has accidentally sent 15,990 Tribes to a smart contract, and after contacting the operators of that contract, understood that the money is permanently lost.
above shows the funds ultimately sent to a void address
This shows that the funds were indeed wired from the same originating address as shown on etherscan
here is the response of the operators of polybridge, who manage that contract
Seeing that the team was so gracious to be able to help @Ocean-x to submit his recovery proposal to a vote, jiandan is wondering if the community could extend the same courtesy to him aswell.