The original .plan was to insert, from time to time, algebraic digressions in which concepts and results from commutative algebra were to be developed in full as and when they were needed.

• 敢于追问到底一对一些别人都不好意思继续追问的问题，只有八戒才会鼓足脸皮穷追猛打，非要把砂锅打破不可。