There are tiny Japanese fonts that support all Chinese characters. This means they have 7000+ characters with 8x8 (or even 6x8) grid, most of which are pretty legible IMO. It's amazing.
Misaki (8x8 pixels): https://littlelimit.net/misaki.htm
k6x8 (6x8 pixels): https://littlelimit.net/k6x8.htm