Currently, regarding the MBR boot of grub4dos, it is indeed absolutely impossible.
But, if you are a mainboard manufacturer, then you may support Chinese (support internationalized languages) at the mainboard BIOS level. If that is the case, then you can patch the MBR code of grub4dos to make it display fully Chinese information (internationalized language character information).
The so-called mainboard BIOS supporting Chinese actually mainly refers to the graphics card's BIOS directly supporting Chinese. This can definitely be done, because the memory of the graphics card itself is extremely large, enough to accommodate the glyphs of the entire Unicode internationalized character set. It's just that the developers of the graphics card didn't consider this issue, which is a strange phenomenon. If I were making a computer, I would definitely do this, because this is an uncharted territory. Whoever can take the lead first can seize the opportunity and then master the de facto industrial standard in this field.
因为我们亲手创建,这个世界更加美丽。