Legal analysis: Prosecution is recommended. If there is a letter of commitment, if the other party fails to perform it, it is a breach of contract, and the other party can pursue liability for breach of contract according to the contract.

Legal basis: Article 577 of the "People's Republic of China and Civil Code" If a party fails to perform its contractual obligations or performs its contractual obligations inconsistently with the agreement, it shall be responsible for continuing the performance, taking remedial measures, or Liability for breach of contract such as compensation for losses.