BEIJING — China is banning children from playing online games for more than three hours a week, the harshest restriction so far on the game industry as Chinese regulators continue cracking down on the technology sector. Minors in China can only play games between 8 p.m. to 9 p.m. on Fridays, weekends and on public holidays starting Sept. 1, according to a notice from the National Press and Publication Administration. That limits gaming to three hours a week for most weeks of the year, down from a previous restriction set in 2019 that allowed minors play games for an hour...