After entering the Professional mode, click the parameter [white balance] Adjust the [white balance] value; Based on 5000K; Slide to the left, the smaller the value, the overall tone of the picture will be blue; Slide to the right, the larger the value, the overall tone of the picture will be yellow. Note: In general, the WB value is set between 4800 and 5000, which can be adapted to the overall  tone of most direct broadcast rooms and is similar to that seen by human eyes.