zhuàng yuán
top scorer in the palace examination (highest rank of the Imperial examination system)
see 榜眼[bang3 yan3] and 探花[tan4 hua1]
top scorer in college entrance examination 高考[gao1 kao3]
(fig.) the most brilliantly talented person in the field
leading light
háng háng chū zhuàng yuán
lit. in every trade, a master appears (idiom); fig. You can produce outstanding achievements in any task, provided you put it enough love and diligence