VANCOUVER—A former Chinese journalist whose reporting led to a political scandal in Canada has been sentenced to seven months in jail for comments he made online regarding a patriotic film about Chinese soldiers during the Korean War. Luo Changping was sentenced this week for comments he made in October mocking the film “The Battle at Lake Changjin” on the Chinese social media site, Weibo. “Half a century later, Chinese people still rarely reflect on the injustice of this war, just as the brainwashed idiots back then would never doubt the ‘wise decision’ of the top leader,” Luo wrote in internet…