BEIJING, Jan. 17 -- China here on Friday renewed its call for Japan to reflect on its history of aggression, as Japan reportedly revised standards for school textbooks.

"China is seriously concerned about Japan's latest move," Foreign Ministry spokesman Hong Lei told a daily press briefing, saying the nature of the history textbook issue is about how Japan educates its young generation, and whether Japan respects historical facts and repents its crimes of aggression.

Japanese Ministry of Education, Culture, Sports, Science and Technology reportedly revised the standard Friday, amid claims that the Liberal Democratic Party (LDP) consider the current standard biased on the subjects of the Nanjing Massacre and Japan's recruitment of "comfort women" during WWII.

The two are grave crimes against humanity committed by the Japanese militarism during WWII, supported by ironclad evidence, Hong said.

"History can never be reversed and facts never be denied," he said.

"China urged the Japanese side to respect people's feelings in victim countries such as China and deeply reflect on the history of aggression, and refrain from going too far on the wrong track," Hong said.