Two aides to North Korean leader Kim Jong Un visited Beijing after mid-July in trips believed to be linked to construction projects, sources familiar with China-North Korea relations said Sunday.Their China visits were not covered by North Korea's state-run media, making it rare for the movements of Kim's aides to become known outside official reports. The two often accompany the leader during his inspections of construction projects in North Korea.The visits suggest economic exchanges between Beijing and Pyongyang are normalizing, despite speculation that bilateral relations may have recen…READ FULL ARTICLE