Signs of grass turtle ink include the following aspects:
1. Dry-wet alternation: Turtle ink usually shows the effect of dry-wet alternation, and there are both dry and wet parts. This kind of ink will form the effect of alternating light and shade in the expression of glyph, which will increase the three-dimensional sense and layering of the work.
2. Center of gravity dispersion: The center of gravity of grass turtle ink strokes will change randomly inside the font, forming irregular lines and shapes through the distribution of ink. This kind of scattered strokes can not only increase the movement of the works, but also show the calligrapher's personality and creativity.
3. Dense and dense: The grass turtle's ink pen is dense and dense, both thick and hydrophobic. This change in density can form a contrast between light and shade and thickness in the composition of glyphs, making the works more visually impactful.
4. Line change: The ink line of the grass turtle will present various forms, some places have thick strokes, and some places have scattered strokes. This changing line brings vitality and movement to the work.