The new operation is as follows:

Step 1: Delete the countertop and check whether the cabinet is embedded in the column;

Step 2: Rearrange the cabinet and modify the parameter values of D1 and D2 of the cabinet (that is, the length and width of the column);

Step 3: Right-click the cabinet with the mouse, select the countertop - countertop installation;

Step 4: Select the front water retaining style, material, and click OK.

Operation completed: