Fig. 4: Rinsing process of ‘Shengfanhong’.
From: Research on traditional craftsmanship of ‘Shengfanhong’
Rinsing process of 'Shengfanhong' (a Rinsing 'Shengfanhong', b Mixing 'Shengfanhong' into a slurry, c Tea infusion, d The untreated alum water turns black after being added to the tea water)
