Black Mountains and Rivers

This is a world where "ink" is the source of power. Legend has it that ancient sages used blood to grind ink, and every word they wrote could communicate between heaven and earth. Although later generations lost the blood of saints, they found a new way - using all things as ink and themselves as inkstones to write their own way in the void. Some people use gold and stone as ink, and write like a mountain, with every stroke and every stroke showing the vitality of a thousand strokes. Some people use grass and trees as ink, and the brush strokes are like the spring breeze, and every word is full of vitality. Some people use thunder as ink, and their writing is like a punishment from heaven. Each stroke carries the power of destroying heaven and earth. And our protagonist... His ink is a bit special.