◎小巫見大巫xiǎowū jiàn dàwū
[like a small sorcerer in the presence of a great one——feel dwarfed;pale into insignificance by comparison;the moon is not seen where the sun shines] 小巫師見了大巫師，法術就施展不開了。比喻兩者之間高下懸殊，差距太大，不能比擬
今景興在此，足下與子布在彼，所謂小巫見大巫，神氣盡矣。——漢·陳琳《答張紘書》