Back in 1971, a secret trip by this person brought China-U.S. relations back on a normalizing trajectory. Over the decades, he witnessed the pendulum of bilateral ties swinging back and forth. He visited China over a hundred times in his century-long life and was called by Chinese President Xi Jinping "an old friend of China." Back in 2014, Henry Kissinger spoke with CGTN's Wang Guan on the "co-evolution" of China-U.S. relations. Let's rewind and hear what he had to say.