「趁火打劫」

(pos:動詞)
<explanation>
yue:趁他人形勢危急、混亂攞着數
eng:to take advantage of someone's chaotic situation; to fish in troubled waters; literally: to loot under the cover of fire
<eg>
yue:疫症底下生意慘淡，業主仲要加租，仲唔係趁火打劫？ (jik6 zing3 dai2 haa6 saang1 ji3 caam2 daam6, jip6 zyu2 zung6 jiu3 gaa1 zou1, zung6 m4 hai6 can3 fo2 daa2 gip3?)
eng:While the business goes south during the epidemic, the property owners raise the rent. Aren't they fishing in troubled waters?