強中自有強中手 解释：
◎ 强中自有强中手 qiáng zhōng zìyǒu qiáng zhōng shǒu
[however strong you are,there’s always someone stronger] 比喻技艺或谋略无止境,还会有更高强的人
强中自有强中手,用诈还逢识诈人。——《三国演义》
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国语辞典（谚语）比喻智慧或技能永无止境，高手中有更高明者。《三国演义．第十七回》：「强中自有强中手，用诈还逢识诈人。」明．沈璟《义侠记．第二十二出》：「强中自有强中手。你还不见机走，让了快活林，残生尚能救。」也作「强中更有强中手」。
英语 however strong you are, there is always someone stronger (idiom), there is always sth more to learn, never be satisfied to rest on your laurels, there is no room for complacency