Drying time for the size must be carefully controlled, as the quality of the gold leaf depends on it. Apply the leaf too soon and it won't go on evenly; apply it too late and it won't adhere.
金箔膏乾燥的時間，必須拿捏得相當精準，因為會影響到貼金箔的品質──太濕，貼不均勻；太乾，金箔貼不住。