1, ink quality problem. At present, the ink is uneven, and many of them are shoddy. So if you use another pen as ink, will the same problem occur?
2. The weather. Ink is easy to dry in hot weather, and it will not come out after a while, which is normal. Just soak the pen in hot water.
There is something wrong with the written words. The gap between the pen and the water outlet is too narrow, which may also lead to water outlet obstacles. This is a design problem when leaving the factory. It may have been originally produced to write some extremely fine strokes.