Did China just accidentally reveal one of North Korea's most closely guarded state secrets?

In an innocuous-looking message, China's state-run Global Times newspaper on Tuesday appeared to reveal the birth date of North Korean leader Kim Jong Un in a tweet by the outlet's official Twitter account as the young dictator arrived in Beijing earlier in the day for his fourth meeting with Chinese President Xi Jinping.

"January 8 is #KimJongUn 's 35th birthday, which means he will celebrate his birthday during his January 7 to 10 visit to China," the tweet said.