Small colored lamp slogan for property decoration

There are thousands of small colored lights on Tiananmen Gate in Beijing. When a small lantern is broken, other lanterns can still work normally, so they are connected in parallel.

Decorative lanterns filled with "sky" for family festivals are connected in series. When one filament is blown, other lanterns can still shine. Perhaps the insulation between the filament holder and the thin wire is broken, and the circuit can still form a path.

When one household appliance stops working, other appliances are not affected, so household appliances are connected in parallel.

Therefore, the answer is: and; String; And ...