这句话语法什么的正确么 如不正确请帮忙改正 如有更好的说法也请赐教

through----though
uesless---useless
前面的时间状语从句也不太好建议改成 when的从句 ]
主句 many去掉 personal items---own possession

让步从句去掉 改成even those useless。之类

when there is a fire people try hard to protect their own possession, even those they don't need at all.

many people tried hard to protect their personal items against catching fire,even through they were useless