NTDTV - New Tang Dynasty Television - XFinity

This question is about "NTDTV - New Tang Dynasty Television", with XFinity-Comcast TV channels, programming, and sports. Why Comcast does not have NTDTV ?
This is a free public channel 38.5. But in order to watch it you have to get out of cable and go to air channel, what an inconvenience!?
Could this due to political reasons??

This topic covered NTDTV - New Tang Dynasty Television, and XFinity - Comcast cable tv service.