Constellation difference idioms

July filariasis: fire: the name of the constellation, namely the heart, appears in the south every summer and June, with the highest position, and gradually sinks to the west after July, so it is called "filariasis". Going to Qiu Lai in summer, the cold weather is coming. Long arrow shot Sirius: arrow: arrow; Sirius: The name of the constellation refers to people who invade the border. Metaphor against the invaders. July filariasis: fire: the name of the constellation, namely the heart, appears in the south every summer and June, with the highest position, and gradually sinks to the west after July, so it is called "filariasis". Going to Qiu Lai in summer, the cold weather is coming. Long arrow shot Sirius: arrow: arrow; Sirius: The name of the constellation refers to people who invade the border. Metaphor against the invaders.