A student at the Jiangxi Vocational Technical College of Industry Trade in the southeastern Chinese city of Nanchang was shocked to find the head of a rat in the rice he was served at the school cafeteria. But it was the response of school authorities that raised millions of eyebrows on Weibo, China’s Twitter. The creature in the rice was a duck, not a rat, the school said, warning students not to discuss the incident online. But the head in the picture had rodent teeth, and the dispute drew more than 310 million views online. Many netizens reached back 2,200 years to highlight a Qin Dynasty idiom, “calling a deer a horse,” which describes the deliberate pushing of a falsehood.