rú / guǒ / tiān / xià / dà / luàn / bǎi / xìng / de / shēng / huó / jiù / huì / biàn / de / fēi / cháng / kùn / nán如果天下大乱,百姓的生活就会变得非常困难。If the whole country falls into chaos, ordinary people's lives will become very difficult.