1. Wash the stain with clear water, so that the impact of water can wash the stain away as much as possible;

2. Knead the blue moon laundry detergent and rice into a paste, pre-coat it on the surface of the stain, and gently rub it repeatedly to wash off the washed stain;

3. Wash with Blue Moon Laundry Liquid regularly. Note: It is difficult to completely remove ink stains in calligraphy. Repeating the above operations can reduce stains.