Writing and drawing with expired ink will be smudged, which will affect the calligraphy effect. So calligraphers generally don't store ink, but collect Mo Ding. Mo Ding is characterized by stability, which can last for decades or even longer. However, the ink quality of Yidege is good, and the ink that has not been opened for more than ten years is still very good. Some brand inks with good quality have a longer storage life.
Extended data
In Four Treasures of the Study's arrangement order, some people think that the patterns and types of paper are the most, with paper as the head, others think that inkstone can be accompanied for life, lasting forever, with inkstone as the head, and some people take pen as the protagonist. Without pen, ink is useless, and inkstone is in a secondary position for a long time.
Scholars also attach great importance to ink, and often call it "mysterious image", "five wonders" and "messenger of black pine", which belongs to the nature of hermit. In fact, ink is important, qualitative and tangible: the fluidity, hairiness, uniformity and freshness of ink can affect the mood of users on site, and also affect the quality and long-term preservation of painting and calligraphy cultural relics.
The production and shaping of Mo Ding is another factor besides application. The so-called molding includes the exquisite art of ink mold: modeling, writing, drawing, carving, and external decoration after plastic casting. The highest level can satisfy the long-term possession value of vision and mind.
reference data
Baidu encyclopedia-ink mark