No. Receiving a lawyer's letter does not mean that you have been sued. It is a warning that the party intends to submit the matter to legal resolution.

Legal basis:

"People's Republic of China and Civil Code"

Article 409 The mortgagee may give up the mortgage or mortgage rights sequence. The mortgagee and the mortgagor may agree to change the order of the mortgage rights and the amount of the guaranteed creditor's rights, etc. However, changes in mortgage rights without the written consent of other mortgagees shall not have any adverse impact on other mortgagees. If the debtor sets up a mortgage with his own property and the mortgagee gives up the mortgage right, the order of the mortgage right or changes the mortgage right, the other guarantors shall be exempted from the guarantee liability to the extent that the mortgagee loses the priority right to be repaid. However, other guarantors Except for those that promise to still provide guarantee.

Article 410 If the debtor fails to pay due debts or the situation agreed by the parties to realize the mortgage rights occurs, the mortgagee may agree with the mortgagor to use the mortgaged property at a discount or use the proceeds from the auction or sale of the mortgaged property. The price will be paid first. If the agreement harms the interests of other creditors, the other creditors may request the People's Court to revoke the agreement. If the mortgagee and the mortgagor fail to reach an agreement on the method of realizing the mortgage right, the mortgagee may request the People's Court to auction or sell the mortgaged property. If the mortgaged property is discounted or sold, the market price shall be referred to.

Article 411 If a mortgage is established in accordance with the provisions of Article 396 of this Law, the mortgaged property shall be determined when one of the following circumstances occurs:

(1) ) The debt performance period has expired and the creditor's rights have not been realized;

(2) The mortgagor is declared bankrupt or dissolved;

(3) The circumstances agreed by the parties to realize the mortgage rights;

(4) Other circumstances that seriously affect the realization of creditor's rights.