"It can be seen from the photos taken by drones that the stacking of solid waste in the Yuhe River has been effectively rectified..." Recently, the police of the Public Interest Litigation Department of the Luanchuan County Procuratorate in Henan Province and the police of the Technical Department went to the Yuhe River section under their jurisdiction, and used the information equipment such as drones to "look back" on the rectification of the public interest litigation case of stacking solid waste in the Yuhe River in 2022. Making full use of technical means to build the "digital+procuratorial" case-handling mode is a vivid epitome of Luanchuan County Procuratorate's focus on case-handling, leading by science and technology, strengthening the deep integration of procuratorial work and information technology, accelerating the pace of "intelligent procuratorial" construction, and innovating case-handling methods. "The source of the case+the eye of the clue", the public interest litigation clue came to the door by itself. "The village of Yibin in Taowan Town built several garbage ponds along the Yihe River, affecting the smooth flow of the river and the ecological environment!" On October 13, 2022, Ma Xiao, the head of the public interest litigation department of Luanchuan County Procuratorate, immediately rushed to the scene with his colleagues after receiving this message. This information comes from the public interest litigation case clue screening system built by the court. "The system can automatically grab Internet information like an arm, and automatically push the screened valuable clues to the public interest litigation department, so we call it the 'source of the case'." said Wang Jianjun, head of the technical department of Luanchuan County Procuratorate. At the beginning of 2022, the "source hand" system was officially put into operation. "The system upgrades the traditional work mode of offline manual comparison screening to the new mode of 'intelligent big data screening', improves the problems of difficult access to clues, inaccurate information, and untimely discovery, and greatly improves the efficiency of case handling," Ma Xiao said. Since the "source of the case" system was launched, the court has collected more than 70 clues to the case, of which 19 cases were filed for investigation, 11 cases were issued with pre-litigation procuratorial recommendations, and 8 cases were filed with public interest litigation. In order to further broaden the source of clues to public interest litigation cases, Luanchuan County Procuratorate also created a "clue eye" WeChat widget. After the public found the public interest damage problem around them, they can only move their fingers and report to the procuratorate online through the widget in the form of voice, sharing location, and sending images. On September 12, 2022, the procuratorate of Luanchuan County received a report from the public at the "clue eye", saying that a chemical enterprise in Luanchuan discharged polluting gas, causing a large number of trees and crops to dry and die in Madiu Village, Heyu Town, and damaging the ecological environment. In response, the police of the public interest litigation department immediately checked and found that 123 trees had died and 1.2 mu of crops had been destroyed due to gas pollution. On September 20 of the same year, the Luanchuan County Procuratorate issued a pre-litigation procuratorial suggestion to the Heyu Town Government and the County Forestry Bureau, suggesting that it perform its supervision duties according to law, urge the responsible subject to repair the forest resources in time, strengthen the construction of forest protection organizations, and strengthen the daily inspection and supervision of the forest resources in the county. After receiving the procuratorial suggestions, the County Forestry Bureau and Heyu Town Government cooperated to actively rehabilitate the damaged ecological environment and urge sewage chemical enterprises to carry out ecological restoration according to the ecological restoration plan. "UAV+3D modeling", special environment forensics is no longer difficult to provide comprehensive services, support procuratorial supervision and judicial case handling,