Why is the score of Luoyang senior high school entrance examination so slow?

The grading is very strict. According to Tuhua Education Network, it is necessary to scan the candidates' papers into the computer one by one, set the answers and scores, set up the grouping of teachers to correct the papers uniformly, and review them many times, so the scores in the senior high school entrance examination are relatively slow. Luoyang, referred to as Luoyi and Luo Jing for short, is a prefecture-level city in Henan Province and a sub-central city of the Central Plains urban agglomeration, spanning the north and south banks of the middle and lower reaches of the Yellow River.