you are the one that I have ever seen in my life to do that extreme saving. I even didn't see the person in china doing

"冬天降温到一定程度会用塑料薄膜把阳台门和窗包起来。利用做饭洗澡的余热，冬天就能完全保证室温在70度以上。在浴室里放个除湿器，洗完澡以后关起bathroom的门一小时左右，打开以后让变干燥的热空气流出来加热房间。"

great, good for you guys