First of all, these illustrations in the PEP mathematics textbook have actually been seen by generations of children. Many schools use PEP textbooks, but any thoughtful teacher will find that there are problems with the illustrations, but didn't the teachers react? I think the teacher must have responded, but not all teachers have responded. After all, most teachers have it? In-service personnel? It may be that when doing things, everyone wants to do more than one thing, and the reaction of some responsible teachers may sink into the sea.
Secondly, parents, as guardians of their children, can't never read their children's textbooks, so I think most parents may not pay attention to it, and people who care about it don't know how to solve this problem. Maybe everyone just took care of their own mentality and didn't poke things out. This time, because it was posted online, more and more netizens forwarded it. Parents who thought they should take care of themselves began to realize that they could talk at this time, so this happened.
Finally, I think this serious problem is mainly caused by the painter's malicious painting, and the auditor of the publishing house should also be responsible. After all, such illustrations can pass the trial, which fully shows that there are problems with the auditors of the publishing house, and I hope to strictly investigate these personnel.