遇強則強

tough adversaries make you stronger

surname Yu

to meet / to encounter / to treat / to receive / opportunity / chance

surname Qiang

stubborn / unyielding

strong / powerful / better / slightly more than / vigorous / violent / best in their category, e.g. see 百強|百强[bai3 qiang2]

to force / to compel / to strive / to make an effort

(conjunction used to express contrast with a previous clause) but / then / standard / norm / principle / to imitate / to follow / classifier for written items

(literary) (conjunction used to express contrast with a previous clause) but; then / (bound form) standard; norm / (bound form) principle / (literary) to imitate; to follow / classifier for written items