Lehua Online Marking System is an educational measurement information product developed by Lehua Digital for the majority of education bureaus and primary and secondary schools on the basis of years of educational information product development and educational metrology, which fills the gap in the application of online marking based on ordinary paper. Developers have worked in the front line of education for many years, and there is a clear demand for the marking system used in the senior high school entrance examination and college entrance examination. Its unique and leading core technology of "no positioning and fuzzy identification" not only makes the system have obvious advantages in rapidity and accuracy, but also makes the operation simpler, more convenient and faster.