Opening a file prompts "Unknown file", or opening a blank file: This question indicates that the currently used software version is not the version of the file. Solution: Ask Fuyi Company for a new program and update the original program.
In the cardboard, the open style chart, design toolbar and pattern toolbar are missing. Solution: Find the installation location of CADV9 of Fuyi Clothing, find the INI folder, delete rp-dgs.ini, open Japanese dxf in dgs, and the font displayed is correct, but the printing in DGS is a little messy: put Japanese font in the system font, and check the drawing outline in Drawing-Settings.