This is a common method used by many flower friends. If you want to water it, tap the flowerpot gently and listen to its voice carefully. If the sound of the flowerpot is dull, there is still water in the flowerpot. Do not water it first. But if the sound is very clear, you can make up water.
Before watering, feel the humidity of the soil with your own hands, and insert your fingers into the soil, about 1 /3 of the humidity is enough. If you feel humidity, or have a certain degree of humidity, you don't need to water. On the contrary, if it feels dry, it means that the water in the soil has evaporated and needs to be watered as soon as possible.
This method is also commonly used, but it is very suitable for experienced flower lovers, because the weight of flowerpots before and after watering is different. After watering, you can feel its weight. When you need to water, you can feel it again. After several times of back and forth, you will be familiar with it. Just weigh the flowerpot before watering.