扯顺风旗[chě shùn fēng qí]
词典\u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD
词典start an undertaking at an opportune moment:顺风扯旗;扯顺风旗。
扯顺风旗
start an undertaking at an opportune moment