What would you do when your child does not want to get up in the morning and spends half an hour crying for that, while you are trying to drop her/him off to school asap and head to work?
Wenhong sorry to hear about that experience. Is this a regular occurrence? I don't know the age but I'm going to assume he/she is young. First suggestion would be to find out what's going on at school. I would compare it to how adults feel when they need to get up to a job the don't enjoy anymore or to be more blunt (hate). How are the grades? Make sure there's no bullying going on or mistreatment from teachers. Kids are good at hiding or find it difficult to discuss these concerns. Second, make sure your child is sleeping through the night. He/she might be legitimately tired in the AM.
Maybe have the child go to bed earlier, and get them up a little earlier and spend some time together over breakfast. that way its not a "getup and get out of the house" thing. That extra time in the morning can make it more relaxed and the child has time to fully wake up. My youngest never wanted to go to daycare and cried for an hour but at the end of the day she didn't want to leave and cried for an hour. Kids are very resilient and get used to routine pretty quickly.