狼煙 (long4 jin1) — smoke signals in Cantonese
longˎ₄狼jinˉ¹煙简 狼烟
Mandarin Pinyin: lang2 yan1
Meaning of 狼煙
nounsmoke signals
nounwolf smoke (war smoke) is a reference to frontier beacon fires burning dried wolf dung to warn of the approach of an invading enemy