What is the dilution of gold powder for writing?

Gold powder is often used when writing Spring Festival couplets in the New Year, so it can't be used directly. It needs to be diluted and blended to achieve the best writing effect. Generally, gold powder can be written with water, distilled water and novolak, or with gasoline and varnish. Among them, Tianna water and gasoline are thinners for gold powder, but the effects are mixed. Compared with gasoline, Tianna water has better solubility, and the diluted gold powder has excellent effect. But gasoline is not like this. Gold powder diluted with gasoline tends to be red and dark, and the written handwriting is not easy to dry. So generally speaking, it is best to choose thinner of Tianna water.