Solution.
1. Remove sealing ring and clean it.
2. Put 20 ml of white vinegar and 250 ml of water into the pot, and put the sealing ring into the boiled white vinegar water 10 minute.
3, take it out and wash it with cold water, then put it on, because it should not leak again.
If it still leaks, it may be that there is a seam at the joint between the pot body and the pot bottom. In this case, we can only change the pot.