你如果仍使用盆火，就叫扫烟囱的人定期来清扫。
老北京火锅采用木炭劲火加热，烟雾从中间的迷你烟囱排出。
Beijing hotpot features a large brass vessel heated by burning coals in a central chimney.
烟囱设计、气流控制、火路通口、灶塘铺设及吊火高度，为火路关键技术。
The design of chimney and air current, the gate of fire way, the laying of fire box and adjustment of the flame height, were the key factors of fire way.
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