(pos:名詞)
<explanation>
yue:以紅色為主色嘅#旗，通常代表危險或者警告（量詞：塊／支／面）
eng:red flag or banner (often implying danger)
<eg>
yue:淺水灣泳灘已經掛起紅旗。 (cin2 seoi2 waan1 wing6 taan1 ji5 ging1 gwaa3 hei2 hung4 kei4.)
eng:The red flag is flying at Repulse Bay.
<eg>
yue:警方舉起紅旗，警告示威者停止衝擊。 (ging2 fong1 geoi2 hei2 hung4 kei4, ging2 gou3 si6 wai1 ze2 ting4 zi2 cung1 gik1.)
eng:The police raised the red banner to warn the protestors to stop charging.
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<explanation>
yue:借指政治或者意識形態綱領，通常同#共產主義 或#社會主義 有關
eng:guiding political/ideological principle, usually in relation to communism
<eg>
yue:打着紅旗反紅旗 (daa2 zoek6 hung4 kei4 faan2 hung4 kei4)
eng:subtle political sabotage or undermining; literally: using the Red Flag to attack the Red Flag
<eg>
yue:三面紅旗 (saam1 min6 hung4 kei4)
eng:“Three Red Flags” (consisted of General Line for socialist construction, the Great Leap Forward and the people's communes, an ideological slogan in the late 1950s)