Premise: Johnny Ma (born Ma Nan in Shanghai) is a Chinese-Canadian film director and screenwriter. He is best known for his debut feature film "Old Stone", which premiered at the Berlin International Film Festival in 2016. The film won the awards for Best Canadian First Feature Film at the 2016 Toronto International Film Festival, and Best First Feature at the 5th Canadian Screen Awards in 2017.
Hypothesis: Ma is the original last name of Johnny Ma.