Ink marks.
For example: When the surface of ceramic tiles is dirty, you can use ammonia or bleach to wipe off the dirt and then rinse it with water. The dirt at the joints of the tiles can be scrubbed with an old toothbrush. If it is not clean after brushing, you can use a caulking agent, which will not only prevent water seepage but also prevent the growth of mold.
Stains are polar liquid stains. Such stains need to be removed by wiping with gasoline, perchlorethylene or organic solutions. Be sure to use a towel to wipe the stain solution when scrubbing, so that the oil stains can be separated from the clothes and avoid leaving marks on the surface of the clothes. If marks appear, they can be removed by repeated wiping. Extended information
The term ink was used in China as early as the Six Dynasties. By the Song Dynasty, ink became a synonym for general calligraphy. Japanese monks adopted the word ink from Chinese, but limited it to the calligraphy of Zen monks.
This meaning was used in the calligraphy and painting catalog of 1365. Inkjet became an important artistic achievement associated with Zen Buddhism during Japan's Muromachi period (1338-1573), when calligraphy was considered a major cultural accomplishment of Zen masters.
The ink is written with a brush, and the handwriting is vigorous and vigorous. It is often accompanied by inscriptions or verses to show that the master taught his disciples or praised visiting dignitaries. Many ink marks later became collection treasures and are of great artistic value.