Pasting from Word doc lost the Chinese font style

I have a Word doc written by Chinese characters, and some words use the font style "HeiTi".
when Pasting the Word doc to CKEditor, all "HeiTi" words lost such font style.

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中文Word文档中有一些“黑体”的文字，复制到CKeditor中， “黑体”全部丢了。