I built my wife her "Green Room", just a well insulated green-house room off the back of the house. We live in East Tennessee on top of a mountain over 1800 feet above sea level.
She grows Nepenthese. (I may have spelled that wrong) and other semi and tropical plants in there just fine. I did add a two brick propane wall-mount heater. But for the most part we heat our house with wood and just open the back door to allow the heat in there. She runs Humidifiers most of the time because the
wood heat really dries it out.
I don't know much about the Chinese greenhouse, but ours was easy
enough to build and sorta low cost. And its pretty passive, except for the additional
wood heat..