tā / píng / ān / huí / lái / le / dà / jiā / zhè / cái / fàng / xià / xīn / méi / chū / shén / me / sān / cháng / liǎng / duǎn

他平安回来了，大家这才放下心，没出什么三长两短。

Only after he returned safely did everyone relax, knowing that nothing serious had happened.