For post-operative medical orders, underline the last pre-operative medical order with a red pen to indicate that all previous medical orders are invalid. If it is a reorganization of medical orders, use a red pen to write the words "Reorganization of medical orders" under the red line, and copy the long-term medical orders that need to be continued on the new medical order in the order of the original dates. If there are any spaces, use them. Draw a diagonal line from left to right with a red pen.