What is the social noun of kiln opening?

High quality brewing raw materials, excellent brewing environment and technology, and good storage environment. Therefore, it is very important for a wine industry to open pits and seal altars, and the quality of wine depends on the timing of opening pits and sealing altars. Generally speaking, the more powerful wine industry will hold a grand opening ceremony or closing ceremony to show consumers and people from all walks of life the brewing process of liquor and experience the brewing process of "ecological brewing and secret storage". Generally speaking, from June to August every year, it is the time for many domestic liquor production enterprises to overhaul the brewing workshop equipment. During these three months, due to the high temperature, ultra-high temperature koji was produced, with many microbial strains and strong aroma-producing ability. At the same time, the brewing raw materials are fermented in the cellar for a long time and fully. The quality of wine brewed in September is particularly good, but the yield is particularly low (only 1 kg is equivalent to 6 kg of raw grain).