What is a condor? Why can't you do divination at that time?

I haven't heard of it, but there is a saying in China that children should not do divination when they are young. Is it time?

Because the time of childhood is uncertain, some people think it is the day before and some people think it is the day after, so many people don't do divination at all when they are young, and people born when they are young don't show signs.