The air conditioner upstairs is always dripping.

1. First, negotiation. Tell upstairs that it's because of your air conditioning problem, which leads to dripping at the bottom of the building. If the dripping water damages something, you must pay for it. If negotiation fails, it depends on whether you can solve it. For example, plug the hole with putty and waterproof material. If you can solve it, solve it yourself. 3. Report the situation to the property. This situation needs to be informed to the property. If the owner can't solve it himself, he should inform the property to let it participate in the solution. If the property can't be solved, we can only use legal weapons to safeguard our rights and interests. In this case, you can take them to court.