What is the main line of the second volume of the second grade Chinese book Grape Valley?

Grape Valley Original:

There is a place called Grape Valley in Turpan, Xinjiang. Fruits abound there. There are apricots in May, fragrant pears, peaches and sand fruits in July and August. By September, people's favorite grapes are ripe.

Grapes are planted on the hillside. Dense branches and leaves spread out in all directions, just like setting up a green gazebo. In autumn, a bunch of grapes hang under the green leaves, red, white, purple, crimson and light green, colorful and beautiful. If you go to the Grape Valley at this time, the hospitable Uyghur villagers will definitely pick the sweetest grapes and let you eat enough.

Part of the collected grapes are transported to the city, and part of them are transported to the drying room to make raisins. The drying room is built on a hillside and looks a bit like a bunker. There are many holes in the wall of the drying room, and there are many wooden shelves inside. People hang grapes on shelves, evaporate water with flowing air, and air dry them into raisins. Raisins produced in Grape Valley are famous for their bright colors and sweet taste.

The grape valley is really a good place.