The Secret in the Toilet
Old Wang's greatest pleasure after retirement was flushing the toilet every morning. His toilet wasn't an ordinary one, but a high-tech smart toilet that could automatically detect the composition of human excrement and record daily health data. Old Wang felt this thing was more reliable than his good-for-nothing son.
Today, a bright red warning flashed on the toilet's display screen: "Solid waste exceeded, please clean immediately." Old Wang frowned, wondering if he had an upset stomach from something he ate last night. He pressed the flush button, and the toilet emitted a muffled hum, but the water seemed blocked and refused to go down.