Yunzhong Jun is a real-time interactive music for human voice and Max/MSP. It is inspired by The Lord within the Clouds in Nine Songs (Chinese name Jiu Ge), which is an ancient Chinese poem series written by Qu Yuan. Yunzhong Jun is also the name of the figure in the poem who controls cloud and rain in ancient Chinese mythology. The lyrics spoken by the performer is come from the poem depicting the scene of ritual in which people calling for rain. The gesture and movement of the performer over the ultrasonic sensors generate the data for controlling parameters in the Max/MSP patch and for manipulating the voice of the performer as well.