It is required to strengthen the recycling of discarded wine bottle caps in the catering department, improve the utilization rate of discarded bottle caps in hotels and catering departments, and prevent employees from discarding discarded bottle caps. Generally, there are opening tips on the bottle caps of porcelain jars above 3000ml. Pottery jar wine weighing 5 kg or more is generally covered with gypsum, which is really hard. Use a chopping iron (try not to use a hammer) to obliquely split 5 cm outward from the upper edge of the gypsum cover to avoid vertical downward or inward.