The VideoLAN Forums

As the title says, the chinese subtitles can only be displayed in Song_std regardless of the subtitle settings. For example,
What is most confusing is that the subtitles in Japanese display normally.
The settings of the aac subtitle is also enclosed.

Video Zoom Percent: 0.375000
Scroll Position: 384
Active Line: 386
Video Position: 34116

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,30,&H00FFFFFF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,3,2,15,15,15,1
Style: 歌曲日文 - op,FOT-RodinMaria Pro B,58,&H00FFFFFF,&H000000FF,&H005D312C,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,7,15,15,8,1
Style: 歌曲中文 - op,方正粗圆_GBK,54,&H00FFFFFF,&H000000FF,&H005D312C,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,3,15,15,75,1
Style: 正文,方正准圆_GBK,60,&H00FFFFFF,&H000000FF,&H009F17E1,&H00D8D8D8,0,0,0,0,100,100,0,0,1,4.5,1.5,2,15,15,15,1
Style: staff,微软雅黑,68,&H00FFFFFF,&H000000FF,&H002E2E2E,&H00000000,-1,0,0,0,100,100,0,0,1,3,0,2,15,15,15,1
Style: 标题,方正大黑_GBK,68,&H006A00BD,&H000000FF,&H00FFFFFF,&H00D8D8D8,0,0,0,0,100,100,0,0,1,4.5,0,2,15,15,15,1
Style: 标语,方正剪纸_GBK,68,&H00FFFFFF,&H000000FF,&H00000000,&H00D8D8D8,0,0,0,0,100,100,0,0,1,0,0,8,15,15,15,1
Style: 歌曲日文 - 1,FOT-RodinMaria Pro B,58,&H00FFFFFF,&H000000FF,&H009F17E1,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,9,15,15,8,1
Style: 歌曲中文 - 1,方正粗圆_GBK,54,&H00FFFFFF,&H000000FF,&H009F17E1,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,9,15,15,75,1
Style: 歌曲日文 - ed,FOT-RodinMaria Pro B,54,&H00FFFFFF,&H000000FF,&H00421693,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,7,15,15,15,1
Style: 歌曲中文 - ed,方正粗圆_GBK,50,&H00FFFFFF,&H000000FF,&H00421693,&H00959595,0,0,0,0,100,100,0,0,1,4.5,3,3,23,30,15,1

Note: I have all the required fonts installed

SSA is rendered in libass, not in VLC.