First of (hopefully) two entries to this year's CCC.
In medieval times, barbers had much more jobs to do apart from shaving and cutting. They were also the surgeons and doctors (even though the way they treated their patiens wouldn't be called 'conventional' nowadays...).
And so we can see a travelling barber with all his belongings. At the time he treats one more frightened patient, his assistant sells miraculous medicines to the villagers. If it helped my neighbour's wife, why shouldn't it help me?
But wait... What is the guy behind the carriage doing? Is it how the medicines are produced?
The MOC and its name were inspired by a book, 'The Physician'.