China’s strict limits on how long minors can play online video games just got stricter. Chinese children and teenagers are barred from online gaming on school days, and limited to one hour a day on weekend and holiday evenings, under government rules issued Monday. The rules, released by the National Press and Publication Administration, tightened restrictions from 2019 aimed at what the government said was a growing scourge of online game addiction among schoolchildren. Under the old rules, players under the age of 18 were limited to no more than…