Starting from WeChat version 6.0, the Chinese font on IOS is Fang Ping /PingFangSC, and the English font is SFUIDisplay. The Chinese font on Android font is Siyuan bold, and the English font is Robot. Siyuan bold font family has seven font sizes and fully supports Japanese, Korean, traditional Chinese and simplified Chinese, all of which are contained in one font. It also includes Latin, Greek and Cyrillic glyphs of the SourceSans font family. Generally speaking, there are 65,535 glyphs per font thickness in the font family (the maximum supported by OpenType format), while the number of online glyphs in the whole font family is close to 500,000.