As we all know, sewers usually have a U-shaped inverted bend, which can be opened by itself. Because the ring usually has a certain weight, it may sink in the U-shaped inverted bend, and all the sewers in our house will not go straight to the ground. The existence of the U-shaped inverted elbow will prevent the unpleasant smell from circulating into the house. First of all, we can connect the syringe barrel with the silicone hose, disassemble the hook, put a hook at the end, then suck up the water in the U-shaped pipe of the sewer with the syringe, then slowly hook the ring with the groove made of the prepared hook, and then slowly pull it up.
If the ring falls into the sewer, stop all work in the sewer immediately and don't wash it. At this time, the most important thing is to stay calm. Don't always nag about what to do if the ring falls into the sewer, but be sure to observe and analyze the situation before doing it. Don't mess with the operation, lest the ring fall deeper and finally can't be taken out. You have to believe that the ring will be taken out in the right way, and a blind and impatient heart will only add chaos.