"Holding an oil-paper umbrella, I wandered alone in the long, long and lonely rainy alley. I hope to meet a girl who is as sad as a lilac... "I believe everyone will be familiar with Dai Wangshus song "Rain Alley". Jiangnan in my memory is always misty and hazy. The thin drizzle can always evoke peoples lingering love. For the world, oil-paper umbrellas have become a unique memory of Jiangnan.