Simplify the following text for a Grade 7 native English-speaking person.
Original: The Han Dynasty 's first emperor was originally known as the king of the region of ` Han Zhong ' æ ä , which is where the word is derived .
Simplified: Han Zu in Chinese means `` Han ethnic group . '' Another name for Han Zu can be Han Ren , which means `` Han people , '' which is written as æ ä in simplified Chinese or æ 1\/4 cents ä in traditional Chinese .