The Shanghai Marriage Market is a place where grown-ups go to try and find a person to marry. It's kind of like a big outdoor shopping mall, but instead of buying clothes or toys, you go there to find a boyfriend or girlfriend.
Lots of moms and dads go to the Shanghai Marriage Market to help their children find someone to marry. They bring big pieces of paper with pictures and important information about their sons or daughters. The information usually includes things like age, height, job, and education.
People who are looking for someone to marry will walk around the market and look at all the pictures and information. If they find someone they like, they can talk to the person's parent and ask for more information or to arrange a date.
It's a way for people to find love and get married, but it can also be a little bit overwhelming because there are so many people and so much information to look at. Plus, not everyone who goes to the market is actually looking for love – some are just curious and want to see what it's like!