Your goods have been randomly inspected, 5H inspection. What should I do if I encounter this problem.

Recently, a customer came to me every day roast that he received a message from the freight forwarder: "Dear, your goods have been spot checked, 5H inspection~"
And then there was no more, just waiting for news when asked. I am clearly a double clearance tax holder. Why is there still a 5H inspection?
What is "5H inspection"?
It's not a lack of gold in the Five Elements, nor is it some mysterious code, but rather the jargon of the US Customs CBP:
-H1: Data review
-H2: Open box inspection
-H3: X-ray machine inspection
-H4: Send to laboratory for testing
-H5:... waiting indefinitely (the scariest one)
Simply put, your goods have been targeted by customs 👀， Low declaration and trade compliance issues, do you understand why 5H was triggered?
Why was it investigated?
❌  The declared value is too low (customs do not believe your price)
❌  IOR cannot be verified (in other words, it is registered by buying a passport casually)
—
What should I do if I'm investigated?
one ️⃣  Cooperate to provide information (invoice, contract, packing list)
two ️⃣  Wait (1-3 months)
three ️⃣  It's best to arrange for a return shipment
Come on, let's talk in the comment section: How long has it been under investigation and no news yet?