1) Use real bold to replace synthetic SimSun bold; 2) Regular SimSun/中易宋体 can also be substituted; 3) Reassign font fallback list (Latin AND CJK). Browser serif/sans settings are overridden; 4) Use Latin fonts for Latin part in Latin/CJK mixed texts; 5) Fix fonts and letter-spacing for CJK punctuation marks.
很不错，文字之间的 kerning 处理很棒，但是很多网站有 bug，比如 Notion 的表格会出现文字重复出现的问题