More than four decades have passed since Richard Nixon's historic visit to China, and the US and China have continued to grow closer over the years. CGTN’s Yang Chengxi visits a married couple in Shanghai, one of them Chinese, the other American, to explore a microcosm of what is now the world's most important bilateral relationship.Subscribe to us on YouTube: https://goo.gl/lP12gADownload for IOS: https://itunes.apple.com/us/app/cctvn...Download for Android: https://play.google.com/store/apps/de...Follow us on:Facebook: https://www.facebook.com/ChinaGlobalT...Instagram: https://www.instagram.com/cgtn/?hl=zh-cnTwitter: https://twitter.com/CGTNOfficialPinterest: https://www.pinterest.com/CGTNOfficial/Tumblr: http://cctvnews.tumblr.com/Weibo: http://weibo.com/cctvnewsbeijing