A shadchan is like a special helper who helps people who want to get married find someone who they might be happy with. It's kind of like a matchmaker who knows lots of people and can help connect two people who might get along well. The shadchan might ask questions to learn about a person's interests and personality, and then suggest someone who would be a good match. This can be really helpful for people who might not know many people who are also looking to get married. The shadchan can help them find new possibilities and hopefully help them find the right person to spend their life with.