In a recent match of the Table Tennis Super League, a controversial edge ball became the focus of attention and sparked a storm of public opinion both on and off the court. Sun Yingsha believed the ball had touched the edge and insisted on appealing, while Qian Tianyi firmly stated that the ball did not touch the edge. The referee ultimately refused to review the play. This incident ignited the emotions of the fans, and Qian Tianyi's post-match comments further fueled the controversy. Let's go back to the match scene. Sun Yingsha and Qian Tianyi were facing each other in a tense match when a ball that appeared to have touched the edge passed over the table from under Qian Tianyi's racket. Sun Yingsha raised her hand to signal the edge to the referee, but the referee did not accept it and even refused to use replay technology to confirm. Qian Tianyi was adamant that the ball did not touch the edge, and the standoff quickly spread from the court to the stands and even to the countless viewers watching the live broadcast. Does this scene seem familiar to you? Ping-pong fans around the world may have similar experiences - edge balls are one of the most common controversies in table tennis matches. Such judgments heavily rely on the referee's visual observation, but after all, humans are not infallible, and missing or misjudging is normal. Sun Yingsha is no stranger to such focal points in her career. For example, in a certain open tournament in 2022, she also became the…