1, knock: If the ceramic jar is closed, you can gently knock around the closed mouth of the jar with a small hammer, which may loosen the jar.

2. pry: if the ceramic jar is closed, you can pry a small mouth from the edge of the closed mouth with a flat screwdriver or a knife, and then pry the edge of the jar slowly along the small mouth.

3. Rotation: If the ceramic jar is rotary, you can try to rotate the top or bottom of the jar to loosen the seal.

4. Cutting: If the above methods can't open the wine jar, consider cutting the wine jar with cutting tools (such as angle grinder and cutting machine). However, please note that the cutting operation needs to be careful to avoid cutting yourself or damaging the wine jar.