The conflict between elementary school students A and C on the square of Shenghe Community highlights the importance of testimony in legal investigations. Xiao A and Xiao C had a dispute over a game. After Xiao C's mother arrived, Xiao A's mother reported to the police that Xiao C's mother had hit Xiao A. Due to the inability of the surveillance video to clearly display the physical altercation, police chief Xiao Shang sought the testimony of witness Xiao D at the scene. Initially, Xiao D did not provide testimony due to fear, but with the encouragement of Director Xiao Shang and the support of his parents, he bravely stepped forward and confirmed that Xiao C's mother did indeed hit Xiao A. Another child also provided testimony of hearing a slap in the face. These testimonies, along with video evidence and the red mark on Little A's face, formed a complete chain of evidence, helping the public security organs to punish Little C's mother in accordance with the law. This process demonstrates the important role of testimony in restoring the truth and upholding justice.