<human>:  Where does the word ‘shanghai’ come from?
<bot>: Shanghai is a port city in China. It’s the largest city in China by population. It’s located in the Yangtze River Delta, which is a large fertile region in China. The word “shanghai” comes from the Chinese word for “to buy and sell”. In the past, people would use the word “shanghai” to refer to the act of buying and selling goods, and then eventually the name of the city was applied to the act of buying and selling goods.