Can the other party see the unilaterally deleted information?

Yes, the other party can see the unilaterally deleted information.

When we send messages, there will be corresponding records in each other's chat records. If we unilaterally delete our chat records and only delete what we can see, the other party can still see the previous conversation. Deleting is only an operation on our own devices and will not affect each other's chat records. If we want the other party not to see a message, we can use the recall function. After the recall, the other party will not see the news of the recall.