See idioms and jokes. Grade three.

No foundation? 【 kūng XuéláI fēng 】 Explanation points: holes and holes; Come: incur. Only when there are caves can the wind enter. The spread of news and rumors is not entirely without reason. It is also a metaphor for the occasional spread of rumors. Song Yu's "Feng Fu" source: "Listen to the teacher say:' Every sentence comes to the nest; There is no basis. "