Lift a small piece of multi-layer white raw rice paper quickly and carefully, so that the inked part of the painting heart is slightly larger than the inked area on the back;
Carefully flatten the painting center, cover the front with the same Xuan paper as the back, press the newly laid Xuan paper with your palm, be careful not to hurt the painting center with your nails, and then gently lift the newly pressed Xuan paper, then you will find that the paper has turned black and the escaped ink has been sucked away by the Xuan paper;
If there are traces of ink flowing, continue to repeat the steps of 1.2. Until there is no trace of ink flowing.
If the old ink runs, this method is invalid. I hope the above methods can help you.