Xiaomi has released another eReader, marketed as the Paper Book Pro II. According to Xiaomi, its new eReader features a 7.8-inch E-ink display that supports colour temperature adjustments and provides a 300 PPI pixel density.
https://www.notebookcheck.net/Xiaomi-Paper-Book-Pro-II-launches-with-an-E-ink-display-that-has-a-300-PPI-pixel-density.610690.0.html