2 sentences for 重重 (chóng​chóng — layer upon layer)

1. 前方山峦重重，云雾缭绕。

   qián​fāng shān​luán chóng​chóng, yún​wù liáo​rào.

   Mountains rise one after another ahead, shrouded in mist.

   Source: Dong Chinese Dictionary

2. 我军已将城市重重包围，但目前围而不攻。

   wǒ jūn yǐ jiāng chéng​shì chóng​chóng bāo​wéi, dàn mù​qián wéi ér bù gōng.

   Our army has surrounded the city but is currently besieging it without launching an attack.

   Source: Dong Chinese Dictionary