Is it okay for the tour group to quit halfway?

If it is stipulated in the contract that quitting the league is a breach of contract and liquidated damages are stipulated, then quitting the league halfway should pay liquidated damages. According to the provisions of Article 578 of the Civil Code, if one party explicitly expresses or shows by his own behavior that he will not perform the contractual obligations, the other party may require him to bear the liability for breach of contract before the expiration of the performance period. Article 585 stipulates that the parties may agree that one party shall pay a certain amount of liquidated damages to the other party in case of breach of contract, and may also agree on the calculation method of damages arising from breach of contract.