Shares in two of China’s biggest online gaming companies have slipped after a state media outlet called them “electronic drugs”

Shares in Tencent and NetEase fell more than 10% in early Hong Kong trade.

Investors are increasingly concerned about Beijing cracking down on tech firms.

In recent months, Chinese authorities have announced a series of measures to tighten their stance on the technology sector as well as private education companies.

An article published by the state-run Economic Information Daily stated that many teenagers had become addicted to online gaming and it was having a negative impact on them. The news outlet is affiliated with the official Xinhua news agency.

The article cited Tencent’s hugely popular game Honor of Kings, saying students were playing it for up to eight hours a day, and asked for more curbs on the industry.

“Distroying a generation”

“No industry, no sport, can be allowed to develop in a way that will destroy a generation,” it said before going on to liken online games to “spiritual opium”.

Tencent has now confirmed it would introduce new measures to reduce children’s access to and time spent on its Honor of Kings game.

Tencent also confirmed plans to eventually roll out the policy to all of its games.

The recovery in share prices came as Economic Information Daily deleted the article from its account on WeChat.

Tencent also saw its shares fall last week after being ordered to end exclusive music licensing deals with record labels around the world.

Tencent is only one of a number of Chinese companies listed in the US, Hong Kong and mainland China to see shares fall drastically this year following China’s crackdown.

Last week saw shares in Chinese online tutoring firms slump after they were stripped of the ability to make a profit from teaching core subjects in China.

The new guidelines also restricted foreign investment in the industry.

The major shift in policy came as authorities try to ease the financial pressures of raising children.

Officials have been worried after China’s latest census showed that the birth rate had fallen to the lowest in seven decades.