qiáng​zhōng​zì​yǒu​qiáng​zhōng​shǒu

however strong you are, there is always someone stronger

Senses

强中自有强中手/ 強中自有強中手 qiáng​zhōng​zì​yǒu​qiáng​zhōng​shǒu however strong you are, there is always someone stronger

(idiom) even among experts there are always those who are more skilled; one should not be arrogant because wisdom and skill have no limits

References

see 强中自有强中手/強中自有強中手 强中更有强中手/強中更有強中手