▁N iu ▁Y un ' gu ang ▁( <0xE7> <0x89> <0x9B> 雲 光 ), ▁station ed ▁at ▁Long ▁Pref ect ure , ▁was ▁ready ▁to ▁rise ▁against ▁Wei ▁and ▁se ize ▁Long ▁Pref ect ure ▁for ▁Z hu , ▁but ▁when ▁he ▁was ▁discovered , ▁he ▁fled ▁toward ▁Ch ang ' an . ▁ ▁On ▁the ▁way , ▁however , ▁he ▁met ▁Z hu ' s ▁em iss ary ▁Su ▁Yu ▁( <0xE8> <0x98> <0x87> 玉 ), ▁who ▁wanted ▁to ▁try ▁to ▁persu ade ▁Wei ▁to ▁submit , ▁and ▁thus ▁they ▁returned ▁to ▁Long ▁Pref ect ure ▁together . ▁ ▁Wei ▁pret ended ▁to ▁be ▁ready ▁to ▁submit , ▁but ▁instead , ▁after ▁wel coming ▁them ▁into ▁the ▁city , ▁killed ▁them . ▁ ▁He ▁then ▁led ▁the ▁soldiers ▁in ▁swe aring ▁an ▁o ath ▁to ▁Emperor ▁Dez ong , ▁sent ▁his ▁c ous ins ▁Wei ▁P ing ▁( <0xE9> <0x9F> <0x8B> 平 ) ▁and ▁Wei ▁Yan ▁( <0xE9> <0x9F> <0x8B> <0xE5> <0xBC> <0x87> ) ▁to ▁F eng t ian ▁to ▁report ▁the ▁events ▁to ▁Emperor ▁Dez ong , ▁and ▁also ▁sought ▁aid ▁from ▁T uf an . ▁ ▁Emperor ▁Dez ong ▁made ▁Long ▁Pref ect ure ▁into ▁its ▁own ▁circuit ▁— ▁F eng yi ▁Circ uit ▁( <0xE5> <0xA5> <0x89> 義 ) ▁and ▁made ▁Wei ▁its ▁military ▁governor . ▁ ▁Z hu ▁then ▁sent ▁another ▁em iss ary ▁to ▁Wei , ▁prom ising ▁to ▁make ▁him ▁the ▁military ▁governor ▁of ▁F eng xi ang ; ▁Wei ▁executed ▁the ▁em iss ary .