"Little Tan Fang" is not a specific model or name. In fact, it is a form of webcast or short video, which is common in some video platforms or live broadcast platforms. Generally, one or more hosts conduct interactive programs in indoor or outdoor environment in the form of spitting, commenting, gagging, etc., with the aim of entertaining the audience and attracting popularity.
In Laughing in the Room, the host may put on some fancy clothes or match some special props to interact with the audience. This form of live/short video program is deeply loved by young viewers because of its relaxed and humorous style.