And as for education, it is joked that when teachers get to "Chapter 14" in health education (the chapter on sex) they look up at the ceiling or down at the floor, but dare not turn around to look at the board.
有個教育圈流傳的笑話是：老師講到健康教育課本第十四章時，台頭看天花板、低頭看地板，就是不敢回頭看黑板。