页
yè
page
leaf
a picture of 页 → a person's head, now the 'face' of a page
The original oracle bone form showed a large head atop a body, emphasizing the head as the prominent 'face' of a document. Over time it shifted from head to the leaf or page of a book — the face of the text.
这本书一共有两百页。
zhè běn shū yī gòng yǒu liǎng bǎi yè。
This book has two hundred pages in total.
请把书翻到第三十页。
qǐng bǎ shū fān dào dì sān shí yè。
Please turn the book to page thirty.