tiān yǒu bù cè fēng yún , rén yǒu dàn xī huò fú
fortune as unpredictable as the weather, every day may bring fortune or calamity (idiom); sth unexpected may happen at any moment
huò fú jí xiōng
fate
portent
luck or disasters as foretold in the stars (astrology)
huò fú wú cháng
disaster and happiness do not follow rules (idiom); future blessings and misfortunes are unpredictable
huò fú yǔ gòng
to stick together through thick and thin (idiom)