Nian Bin poisoning case Who is the murderer

Nian Bin poisoning case [1]? After investigation, the police quickly determined that it was caused by man-made inputs of fluoroacetate rat poison, and believed that his neighbor, Nian Bin, had a major suspicion of the crime and was arrested and prosecuted. [2]? The case lasted eight years and nine trials, and was sentenced to death on four occasions; in October 2010, the Supreme Court issued a decision not to approve the death penalty due to "unclear facts and insufficient evidence" and reversed the original sentence and sent the case back to the Fujian Provincial High Court for retrial; on May 5, 2011, the Fujian Provincial High Court also reversed the death sentence handed down by the Fuzhou Intermediate Court against Nian Bin, and the case was sent back to the Fuzhou Intermediate Court for a retrial. On September 7, 2011, the case was heard again in the Fuzhou Intermediate Court, and in the absence of new facts and evidence, the Fuzhou Intermediate Court again sentenced Nian Bin to death and deprivation of political rights for life on November 24, 2011. on August 22, 2014, the Fujian High Court rendered a final judgment: First, the Fuzhou Intermediate People's Court's (2011) Rong Penal Initial Zi 10 (榕刑初字10) decision was revoked. (2011) Rong Criminal Initial No. 104 of the Intermediate People's Court of Fuzhou City. Second, the appellant Nian Bin was acquitted. Third, the appellant Nian Bin does not bear civil liability. Defense lawyers pointed out that the successive hearings, the prosecution did not submit new evidence, the court based on the same evidence but made a very different verdict, on the contrary, the defense found more and more doubts and flaws, the investigating authorities are suspected of extorting confessions by torture, forged evidence