Noto Serif SC
Google Fonts · Google / Adobe · 2014

A high-quality serif for Simplified Chinese that combines a broad weight range with strong Latin and Cyrillic support, making it one of the most capable CJK serif typefaces available for free.
About
Noto Serif SC draws on the Song typeface tradition — the dominant model for Chinese serif typography — while applying the Noto system's commitment to cross-script harmony. Its eight weights, from ExtraLight to Black, make it suitable for everything from long-form editorial text to bold display headlines in Chinese-language publishing. The quality of its Latin companion glyphs means it performs well in bilingual documents without requiring a separate Latin typeface.
Classification
Noto Serif SC is a refined serif for Simplified Chinese with carefully considered stroke contrast that bridges Chinese calligraphic tradition and contemporary print typography. Latin and Cyrillic coverage is designed to harmonise optically with the Chinese glyphs, and the eight-weight range is unusually generous for a CJK serif.