Zen is what happened when Buddhism met Taoism, and the more accurate term would be "Zen-Taoism," not "Zen-Buddhism," because Zen is more Taoist than Buddhist. If you are interested, check out "The Tao of Zen" by Ray Grigg, hardback or Kindle at Amazon. With both Taoism and Zen you get the doctrine: "It doesn't matter what you believe or think. It matters what you do. Believe anything you like. Think anything you want. As long as it enables you to do what needs to be done, when, where and how it needs to be done, in each situation as it arises, with nothing in it for you, all your life long." See what needs doing and do it, when, where and how it needs to be done," is all it takes to transform the world (If applied). And we spend all our time talking about the 10,000 things without doing what needs doing. If you see something that needs doing, do it. That's all the Zen/Taoism you need.