lìshǐ / shàng / xǔduō / wángcháo / de / mièwáng / dōu / shì / yīnwèi / huòqǐxiāoqiáng

历史上许多王朝的灭亡都是因为祸起萧墙。

The fall of many dynasties in history was all due to internal strife.