夏仁虎缸中鐵屜緣防凍,門外氈棚爲坐更。小雪傳呼驚蛰撤,順時防衞重皇城。宮殿前大鋼鐵缸小雪後安設缸蓋,蓋中置鐵屜,熾炭火融冰,驚墊撤去。又坐更處安設氈棚,其設與撤之時令亦如之。註:據《總管內務府現行則例):“乾清門外所設銅鐵缸共用木蓋二百 Xia Renhu cylinder iron tray edge antifreeze, outside the shed for the door to sit more. Little snow shook Jingshu withdrawal, timely defense heavy Imperial City. The front of the palace after the installation of steel cylinder snow cover cylinder lid, cover the middle of the iron drawer, Chi ice melting ice, frightened pad removed. Also sit more set up sheds, its design and withdrawal of the same as the order. Note: According to ”the current House House government is the case): " Drying outside the set of copper cylinder shared wood cover two hundred