Mao Ri Xingguan is one of the Twenty-Eight Mansions in Journey to the West. He takes an individual role in the Scorpion Demon episode, where his rooster nature provides the exact power needed to overcome her.
A Celestial Rooster
His star-official identity is paired with a rooster form and the force of its cry. The novel uses this natural opposition as a specific answer to the Scorpion Demon rather than as a general celestial attack.
The Scorpion Demon
Sun Wukong and Zhu Bajie cannot subdue the Scorpion Demon by direct combat. Mao Ri Xingguan appears above her refuge and crows, forcing her to reveal her scorpion form and bringing the encounter to an end.
Official and Animal Form
His heavenly office and rooster nature meet in the same decisive act: the cry overcomes the Scorpion Demon when Sun Wukong and Zhu Bajie cannot.
