I want to design a miniature drip irrigation system in my garden. That is, how to install it on the balcony according to this requirement?

Look at the picture. Your garden is mainly potted. It is best to choose the drip irrigation method of dropping arrows. There should be a tap water outlet on your balcony, as long as the pressure is 1.5kg.

16 pe pipe is used for the pipeline, and the PE pipe is punched and installed with arrows. When you see that your flowerpot is placed line by line, PE pipes can be placed along your flowerpot.

Just this one in the picture.