BEIJING — Chinese regulators on Wednesday summoned gaming corporations such as Tencent Holdings and NetEase Inc. and suggested them about the physical and intellectual fitness of children, state media reported. Regulators have ordered corporations, in addition to the National Press and Publications Administration and China’s Cyberspace Administration, to strictly abide by new time restrictions for minors and ban the content of “harmful” gambling, such as violence or depiction of men “chicks,” Xinhua news agency reported. Chinese President Xi Jinping has called for a “national rejuvenation” with a stricter Communist Party on business, education, culture and religion. In recent weeks, the...