When applying for a patent electronically, when the supplementary book and other supplementary documents are signed together, it is always suggested that "the file must include the document with the application number", which actually exists. Click Reply to make corrections, and the correction window will pop up. First, select the modified document in the upper left, then select Reply in the lower left of the modification window, click Modify in it, fill in the contents that can be filled in, save and exit the Reply page, click Modify in the lower left corner of the reply modification window, then select Modify, and double-click in the pop-up list. Then a list of previously submitted documents will appear, and double-click Modify and save. CPC is so rubbish that it is detrimental to the innovative image of a big country!