Re-order Paragraphs

Put the sentences in the correct order:

1. ▲▼Thanks to this seasonal cycle, even kings in the middle of a desert could enjoy chilled drinks in the heat of July.
2. ▲▼Workers then cut the ice into blocks and packed them deep inside the insulated chambers below ground.
3. ▲▼During the cold winter nights, water was channelled into shallow pools beside these domes, where it froze into thick sheets.
4. ▲▼They built enormous domed structures of mud brick known as yakhchals, whose thick walls kept the interior remarkably cool.
5. ▲▼Long before refrigeration existed, Persian engineers devised an ingenious way to store ice through the scorching desert summer.