The rules, published by the National Press and Publication Administration, said users under the age of 18 will only be able to play games from 8pm to 9pm on those days, according to the Xinhua news agency.

Online gaming companies will be barred from providing gaming services to them in any form outside those hours and need to ensure they have put real name verification systems in place, said the regulator, which oversees the country’s video games market.

Previously, China limited the total length of time minors could access online games to three hours on holiday or 1.5 hours on other days.

The new rules come amid a broad crackdown by Beijing on China’s tech giants, such as Alibaba Group and Tencent Holdings, which has unnerved investors, hammering Chinese shares traded at home and abroad.

The National Press and Publication Administration also told Xinhua it would increase the frequency and intensity of inspections for online gaming companies to ensure they were putting in place time limits and anti-addiction systems.