Just a brief analysis of blue and white porcelain, just a brief analysis, I hope it will help.

"Plain embryo outlines blue and white brushstrokes, from thick to light"

This sentence lacks a subject, or the subject refers to "embryo"

However, because the vegetarian embryo is not a human being, it is naturally impossible to add verbs as the subject, so this sentence is a sick sentence.

The sentence with the same problem is "peony picture on the bottle"

As for what Yuan Tianxin said, it probably refers to the sentence "The calligraphy carved on the bottom of the bottle imitates the elegance of the previous dynasty"

I generally understand that the bottom of blue and white porcelain is not printed with official script.

Thank you.