What does it mean for the US delegation to receive a reminder letter after the deadline?

A dunning letter is a dunning tool, which is a notice used by the payer or individual when the payment is overdue. Other documents commonly used by enterprises in collecting accounts receivable have both commercial nature and legal connotation. Generally, it refers to the letter sent by the payee asking the other party to pay back the money when the other party owes money. Reminder letters can interrupt the limitation of action. The limitation of civil action in China is generally two years, but if the parties claim rights, they can interrupt the limitation and recalculate the time of two years. Sending a reminder letter is also one of the ways to claim rights, so it can interrupt the prescription and prolong the litigation time.