Overreading
Don't rush to expose children to profound books, let them feel happy in reading, not stressed. Too much emphasis on early reading may kill their interest in reading.
Mathematics anxiety
Mathematics is really important, but don't forget to let children learn mathematics in play. Premature exposure to complex mathematical concepts may make them afraid of mathematics.
English pressure
English is an international language, but don't let children feel the pressure of learning before entering school. Let them contact English in the natural environment and enjoy the fun of language learning.
Fatigue in training class
Too many training classes and extracurricular activities will make children physically and mentally exhausted. Let them have time to rest, play and explore their interests.
Achievement first
Don't put children under too much competitive pressure before school. Achievement is not the only criterion to measure everything. Let them enjoy the learning process, not the result.