Foam tea was invented by China. Milk tea was originally a daily drink of nomadic people in northern China. It is made of milk and black tea and has a history of at least 1000 years. Milk tea has the dual nutrition of milk and tea. Since the Yuan Dynasty, it has gradually spread to all parts of the world. After spread and evolution, it has developed a variety of flavors such as iced milk tea, hot milk tea, sweet milk tea and salty milk tea.