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In China,the tea culture has a long history,most people like to drink tea.but we mould forget a cup of tea for doing sther things,maybe it is steeped just now.When we want to drink it ,this tea was cold. So I want to solve this problem using a lamp.According to the studies ,ordinary light bulds to power by 95% are converted into heat and only 5% into light.So, I want to use of the metal thermal performance,the heat of the light bulbs distributed will be guided to a metal ring in the base of groove,and the bottom of the cup also has a metal ring and extended to the inside.So through this method to keep the tea warm.