(18) རྒྱ་བྱ་ཡ་ཀྱེ༎ ཇྀ་སྐད་བྱ༎ ད་མེ་འགེ༎ ཇི་ལྟར་བྱ་ཛིམ་ཤིང་ཛོ༎ ལེགསྤ། ཇི་བྱསླ་ཧོའུ།
When subject to fire the timber will burn and a char will form on the burnt surfaces, eventually the burn-rate will cause the door to shrink in size and bow/twist towards the fire...........and then it will fail to provide fire separation.
Garden, Structure, Flora