Grandmaster Chen Xiaowang originally created the 19 Posture Form, about 30 years ago, as a means to introduce new students to Chen family Taijiquan (Tai Chi). The form is much simpler than Laojia, the traditional form, and does away with many postures that require some physical prowess. However, after more than three decades using this form for its intended purpose, Chen Xiaowang felt that still too many Taijiquan (Tai Chi) students had to face a steep learning curve, so he recently created the 9 Posture Form to make learning a more gradual experience.
Usually, a new student would take about a year to learn and be able to practice the 19 Taijiquan (Tai Chi) Posture Form by himself, without big mistakes, if starting from scratch. If a student already knows the 9 Posture Form, this time frame is cut in half, to about 6 months. We teach this form in our intermediate program.

The video below is the same form, viewed from the back. It is offered here for your convenience, as this is the view a student usually has when following the teacher.