Bianzhidai is inspired by shading characters in ASCII art and Chinese woven plastic bags. Initially constructed in Glyph Drawing Club, it was later turned into a modular design. First released in six styles: Base, Comic, Cube, Pearl, Ring, Square. [Velvetyne]

Updated and revised in 2024, now spanning 27 styles in three subfamilies: Bianzhidai and Bianzhidai noBG (10 styles each: Base, Brush, Bubble, Cloud, Cube, Messier, Messy, Pearl, Ring, Stitches) and Bianzhidai COLR (7 styles: Gray, Grid, RGB, Layer back, Layer front, Layer highlight, Layer side).