Yellow Earth are a theatre company renowned for their championing of diverse voices from the East Asian community. In their 22nd year, they continue to blaze the trail, broadening the range of characters represented on stage. Having worked with original Yellow Earth founding member Kumiko Mendl to develop her piece, ‘Zen’, Joyce Lee discusses how she’s crafted the show, the importance of speaking out about mental health and whether there are enough strong female protagonists represented on stage…