Chinese President Xi Jinping and North Korean leader Kim Jong Un on Sunday exchanged congratulatory messages to mark the 75th anniversary of the two countries' diplomatic relations, Chinese and North Korean state-run media said, amid speculation about worsening bilateral ties.In his message, Xi said he "highly values" the two countries' relations and that China is willing to work with North Korea to "strengthen strategic communication and coordination, deepen friendly exchanges and cooperation and continue to write new chapters" for bilateral friendship, according to the official Xinhua New…READ FULL ARTICLE