Article in English: It's a green box with a white "X" on it. Excel will open. This menu item is in the top-left side of the page. A drop-down menu will appear below it. It's an option in the File drop-down menu. Doing so opens a new page with template options. Type invoice into the search bar in the top-right corner of the page, then press ⏎ Return. You must be connected to the Internet in order to search for templates. Click a template to open a preview window with the template displayed. It's in the preview window. This will open the invoice template as a new document. For example, most templates have "Company" written across the top; you would replace this heading with your company's name. To edit text on the Excel document, double-click the text item, then remove the text item or replace it with your own. Enter any information required by your invoice template to ensure that the final total matches what you're owed.  For example, some invoice templates will require you to enter an hourly rate or a fixed charge. Most invoice templates use formulas to combine your entered hourly and the number of hours worked in the "Final Total" box. Click the File menu item, click Save As, enter a name for your invoice, and click Save. Your invoice is now ready to be sent.

Summary in Chinese:
打开Microsoft Excel。 点击文件。 点击从模板中新建。 搜索发票模板。 选择一个模板。 点击打开。 根据需要编辑模板。 填写这张发票。 保存发票。