An inquiry into the maths textbook, published nearly a decade ago, was launched after the illustrations were widely mocked on Chinese social media earlier this year.

A months-long government inquiry has concluded that the illustrations “properly reflect the sunny image of China’s children”, The Guardian reports.

Education authorities said 27 people had “neglected their duties and responsibilities” and have been “dealt with accordingly”, though no further details have been given.

The illustrators, designers and their studios will also no longer be allowed to work on textbooks again.