As our cities rapidly urbanize, many people lament the loss of landmarks and historic streets that they grew up with. Should we wipe out every old building and every ancient street to make room for bigger, taller and more efficient high-rises? We discuss the approaches to sooth our nostalgia and preserve our culture. / Have you ever thought about a personality test for companies and businesses (21:02)? On the show: Laiming, Niu Honglin & Yushun