This paper concludes that ZHU Xi as a famous Yi-ologist contributes more in the Prenatal than the Postnatal and then further elaborated on this characteristic.

• 文章的结论是，作为一代易学大家，朱熹在先天学上多有领悟，而在后天学上却少有心得，并进一步讨论了朱熹易学的这一特点。