1. First, pour water into the inner container for heating: if you want to make tea in a thermos cup, you can use hot water to brew the tea leaves, and then pour a proper amount of cold water after the tea leaves are fully soaked, and then cover the thermos cup and place it in the heat preservation effect.

2. Pour water into the container and cover it: If you want to make tea in a thermos cup, you can put a proper amount of tea leaves into the container, then pour a proper amount of hot water, and then pour a proper amount of cold water after the tea leaves are fully soaked, and then cover the thermos cup and put it in a heat preservation effect.

3. Pour water into the container, then cover it and turn it upside down: If you want to make tea in a thermos cup, you can put a proper amount of tea leaves into the container, then pour a proper amount of hot water, and then pour a proper amount of cold water after the tea leaves are fully soaked, and then cover the thermos cup and put it in a heat preservation effect.

4. Wait for a while before drinking: you can avoid burning your mouth.