2 sentences

1. 成群野雁正向南方飞去。

   chéng​qún yě yàn zhèng xiàng nán​fāng fēi qù.

   Flocks of wild geese are flying south.

   Source: AI Challenger 2017

2. 他们成群结队地生活在一起。

   tā​men chéng​qún​jié​duì de shēng​huó zài yī​qǐ.

   They live together in groups.

   Source: CCMatrix