A court in central China said on Friday a Chinese kindergarten teacher who poisoned 25 of her students, killing one, has been executed. A notice posted outside the No. 1 Intermediate Court in the Henan province city of Jiaozuo said Wang Yun’s sentence had been carried out on Thursday. Wang, 40, was convicted of putting toxic sodium nitrite in porridge served to children at Mengmeng Pre-school Education on March 27, 2019, following an argument with a colleague identified only by the surname Sun over “student management.” While other students recovered fairly quickly, one student, identified only by the surname Wang,…