disappear like snow when hot water is thrown on it

a long life - wàn shòu wú jiāng

poor clothing and poor food - cū yī è shí

when the flood approaches bank up to keep it out - shuǐ lái tǔ yǎn

check erroneous ideas at the outset - fáng méng dù jiàn

throw a long line to catch a big fish — adopt a long-term plan to secure sth big - fáng cháng xiàn diào dà yú

with special capacity - hǎi hán dì fù

bury the hatchet - dāo qiāng rù kù

deserted - qīng guō lěng zào

It's in the bag - náng lòu chǔ zhōng

throw oneself on sb.'s mercy - qǐ āi gào lián