The method of keeping the temperature of the tea machine at 50℃ is as follows:

1. First, clean the inside of the tea bar machine and add a proper amount of warm water to ensure that the inside of the tea bar machine reaches the temperature.

2. Then set the inside of the tea bar machine to a 50-degree heat preservation state, and there will be relevant temperature setting options on the control panel of the tea bar machine. Please follow the instructions.

3. Finally, choose a suitable thermos cup or teacup to keep the temperature of tea soup at 50 degrees.