如履薄冰

lit. as if walking on thin ice (idiom) / fig. to be extremely cautious / to be skating on thin ice

as / as if / such as

shoe / to tread on

surname Bo

thin / cold in manner / indifferent / weak / light / infertile

meager / slight / weak / ungenerous or unkind / frivolous / to despise / to belittle / to look down on / to approach or near

see 薄荷[bo4 he5]

ice / CL:塊|块[kuai4] / to chill sth / (of an object or substance) to feel cold / (of a person) cold / unfriendly / (slang) methamphetamine

variant of 冰[bing1]