My 3-year-old child has been enjoying his preschool. However, recently he cried not to go to preschool, how do I persuade him to go?

I agree with both girls. Usually if there's a sudden change in attitude school would meant that something must have happened to her in school. My daughter was a social butterfly and loved school and one time, she suddenly cried when I asked her to put on her uniform and told me that she didn't want to go school. It was weird because I never once had a problem with her about school so I let her skipped the day and took urgent leave. I took her out and while having lunch, I casually asked her why and she said that she didn't like XXXX. It took a lot of coaxing and after a while, I realized that it was a case of bullying. I called the school up and wanted to clarify, and to cut story short, my daughter and the other girl hugged it out and made up and they're good friends until today. My advise is to slow talk your child and study his expressions when you do so. Alternatively, speak to his teachers and asked if there was any recent incidents that could have affected him.