GbEng
红旗是危险的信号。 A red flag is a sign of danger.
五星红旗迎风飘扬。 The five-star red flag is fluttering in the wind.
是把这面红旗打开的时候了。 It's time to shake out the red flag.
一面红旗徐徐升起。 A red flag slowly went up the pole.