There is a Chinese saying, "to dare to challenge powerful people". This means that someone tries to contend with those who are beyond one's own ability. We often hear this phrase, but we don't know where it comes from. So, does "Tai Sui" really exist? If it does, what does it look like? Probably no one can explain clearly. However, more than 10 years ago, an unidentified biological entity was discovered in Zhouzhi County, Shaanxi Province, and the locals called it "Tai Sui". So, is this unidentified biological entity the legendary "Tai Sui"?