Can I draw without ink for a long time? I just opened it before and haven't used it since. Could it be that Mo, dizzy when mounting, released the painting again?

Depending on the brand of ink, some finished inks are added with glue, which will not dissolve when dried. I like ink with glue. Generally, the ink ground with ink blocks contains glue, because the ink will not faint after drawing lines and rendering, so it will be fixed on the screen. As you said, the ink fainted during mounting, and it was not handled properly before mounting. Fix the picture with gelatin after painting.