Maybe or is it a modified version of Du Yu Ze's material? I can't tell.
Pao Chui:
https://www.youtube.com/watch?v=VPDCTAtmE6A
Du Yuze's Lineage Chen Style Taijiquan Xiaojia Headgear Thirteen Poses (Teacher Lin Zhongshi)
https://www.youtube.com/watch?v=Q04dsQE_uzk
https://www.youtube.com/watch?v=yDRhjhoB9Es
https://www.youtube.com/watch?v=yDRhjhoB9Es
https://www.youtube.com/watch?v=w-KWs9DfWEk
Teacher Lin Zhongshi practicing Chen Style Taijiquan Thirty-Eight Forms
https://www.youtube.com/watch?v=yDRhjhoB9Es