Kaifeng was one of the largest cities in China at that time and it was full of various kinds of shops and heavy traffic from people coming in and leaving the city. As Wu Song walked along enjoying the organised chaos, the sky changed colour and it became a torrential downpour. It rained so much that waves flowed across the ground and mist rose around the houses. The rain hurt the top of his head so he huddled under the roof of a small shop along with several other people vying for safety. However, as soon as it started, the rain suddenly stopped.