Director of the Song Dynasty says, before floor, charcoal of a bamboo can be spread on the ground, if choose cheap activated carbon, OK and proper store is a bit larger, the effect is same.

 
  • 宋主任说,在铺地板前,地面上可以铺一层竹炭,假如选择便宜的活性炭,可以适当铺厚一点,效果是一样的。
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