India after drinking tea, why the teacup hard to the ground

India is very dirty, guests drink tea, to be hard to wrestle, in order to prevent the business to reuse unhygienic teacups, but also in the show drink pain, which has formed a custom. Anyway, are drinking to throw away, businesses simply out of plastic cups, with disposable clay cups, the cost is very low and hygienic environmental protection, in India, clay cups are also easier to buy than plastic cups.