A commentary done about Chengdu based Swiss artist Antonio Wehrli and his art in 2017 is live on youtube:
https://www.youtube.com/watch?v=OWsZxSqPqr8&t=13s
"The colorful world of Antonio Wehrli"
It was done by Chengdu CDTV 2 and broadcasted in early 2018.
Now it's on youtube - enjoy!