You asked if you could drink tea in a gluttonous square cup with a nail pattern on your chest. Of course. Gourmet milk nail-patterned square cup is a bronze ware of Shang Dynasty. The bronze has uniform texture, no rust on the surface, warm skin color and smooth inside. Bronze will not react with tea and will not affect the taste of tea. So you can drink tea in a square cup with a pattern of milk nails.