No modern high-tech ancient criminal investigation cases how to solve

In fact, before the nineteenth century, whether domestic or foreign, the efficiency of solving the case is very low, the wrongdoing is very common. At that time, the main method of solving the case is to rely on eyewitness testimony or the public report, which is now called "rely on the masses" (in fact, "rely on the masses" is still the most important means of solving the case today, the modern criminal investigation books will teach the police how to visit). China's Song Ci's forensic science achievements are quite high, in determining the time and method of the crime is very good, but the ancient lack of identification techniques (such as modern blood type or DNA and so on), in other words, it is easy to have a suspect but difficult to identify the situation. In those days, solving a case relied a lot on subjective guesswork and was not objective enough, and often required a good and righteous official to go to great lengths to verify and double-check in order to correctly solve the case.