hop (Humulus lupulus), climbing plant whose flower cones are used in brewing beer
难于登天
nán yú dēng tiān
harder than climbing to heaven (idiom)
蚂蚁上树
mǎ yǐ shàng shù
"ants climbing a tree", a Sichuan dish made with cellophane noodles 粉絲|粉丝[fen3 si1] and ground meat (so called because the particles of meat clinging to the noodles look like ants on the twigs of a tree) / (sex position) man standing, woman clinging to his upper body / (erotic massage) full-body licking
溯溪
sù xī
river tracing / mountain stream climbing (recreational activity)
百尺竿头,更进一步
bǎi chǐ gān tóu , gèng jìn yī bù
lit. after climbing a hundred feet up a pole, one should go even further (idiom) / fig. even if one has achieved a measure of success, one should strive to do even better