Cheng's response is this: "I think that the original potters also followed their whims and improvised when they worked, and didn't rigidly make each embellishment by rote." Cheng considers the problem and then adds: "I not only want to reproduce the appearance of the originals, but also the spirit of the people who made them."
但是我認為以前的製陶者也是率性而做，並不是僵硬地一點一點刻畫上去，」鄭永國思索這個問題：「我不但要復原器物的形貌，也要復原史前陶者的精神啊！」