Some sections have been hollowed out over time, and are sagging 4. Grass and tree roots that have infiltrated 5 gaps pose another major threat to their stability.

随着时间的流逝，部分城墙出现空心区、正在塌陷。长在城墙缝隙之间的草、树根也对墙体的稳固构成威胁。

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Some sections have been hollowed out over time, and are sagging 4. Grass and tree roots that have infiltrated 5 gaps pose another major threat to their stability.

随着时间的流逝，部分城墙出现空心区、正在塌陷。长在城墙缝隙之间的草、树根也对墙体的稳固构成威胁。

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