To make lacquer dry more quickly, artisans of old invented the "dark chamber," an airtight room where the temperature is optimally kept between 20 and 30 degrees Celsius and the humidity is maintained at 75-80 %.
古人為促使漆液快速乾燥，發明了「蔭堂」，這是一間密不通風的房屋，室內溫度最好保持在攝氏二十至三十度，濕度七十五至八十度。