If you want to draw the flow chart of your graduation thesis easily, Tu Tu is a good choice. First, the flow chart symbols are standardized and complete. I wrote an article about the flow chart drawing specification before, and one of the specifications is the symbol specification: the symbol library built in Billion Tu Tu includes a series of standardized flow chart symbols, including but not limited to the symbols of basic flow chart, data flow chart and swimming lane chart (also called cross-functional flow chart).

Second, the operation is simple and easy to use. Flowchart symbols can be easily dragged from the symbol library on the left to the canvas, and can also be quickly added through the "action buttons" (just small triangle icons) around the symbols; The connection between symbols is also very simple. Click the "Action Button" icon to quickly generate a connecting line, or you can drag and drop the connecting line manually.