3000 yuan. Inquiring about relevant information shows that graduates who break the contract have to bear the liability for breach of contract and pay a penalty of 3,000 yuan. The employment agreement of Longhu University has legal effect once it is signed, and neither party may terminate it without authorization, otherwise the breaching party shall pay the liquidated damages stipulated in the terms of the agreement to the party whose rights are damaged. Graduates' breach of contract, in addition to their own liability for breach of contract and payment of liquidated damages, will often cause other adverse consequences.