Does the court's reply to the relevant department's interpretation of the document in question need to be cross-examined?

No need. Questioning refers to the parties, litigators and third parties to challenge the evidence material, explain the authenticity and reliability of the process of discussion and identification, and the court to the relevant departments of the interpretation of the relevant documents in response to the letter of the court to explain the relevant documents, do not need to the parties, litigators and third parties to question and discuss, and therefore do not need to be questioned.