1 9 6 0 s , ▁the ▁roots ▁of ▁using ▁the ▁common al ities ▁of ▁bag ua ▁and ▁x ing yi ▁in ▁practice ▁and ▁application ▁can ▁easily ▁be ▁trac ed ▁back ▁through ▁Hung ' s ▁teacher ▁Ch ang ▁Ch un - F eng ▁( 張 <0xE4> <0xBF> <0x8A> <0xE5> <0xB3> <0xB0> ) ▁to ▁his ▁teachers , ▁Li ▁C un yi ▁( 李 存 義 ) ▁and ▁G ao ▁Y ish eng ▁( 高 義 <0xE7> <0x9B> <0x9B> ). ▁ ▁When ▁Hung ▁I - H si ang ▁took ▁a ▁trip ▁to ▁Japan , ▁he ▁was ▁very ▁im pressed ▁with ▁the ▁way ▁mart ial ▁arts ▁instruction ▁was ▁organized ▁there . ▁He ▁liked ▁the ▁uniform s , ▁the ▁bel t ▁system , ▁and ▁the ▁system atic ▁approach ▁to ▁training . ▁ ▁Sub sequently , ▁he ▁adopted ▁many ▁of ▁the ▁Japanese ▁style ▁mart ial ▁arts ▁school ▁characteristics ▁when ▁he ▁opened ▁his ▁own ▁school . ▁The ▁students ▁had ▁bel t ▁ranks , ▁wore ▁Japanese ▁style ▁uniform s , ▁and ▁Hung ▁de vised ▁a ▁more ▁system atic ▁approach ▁to ▁mart ial ▁arts ▁instruction ▁than ▁what ▁was ▁typical ▁of ▁most ▁Chinese ▁style ▁schools . ▁ ▁Hung ▁felt ▁that ▁before ▁a ▁student ▁was ▁ready ▁to ▁learn ▁x ing y iqu an ▁or ▁any ▁of ▁the ▁other ▁internal ▁arts , ▁he ▁first ▁had ▁to ▁ac quire ▁body ▁strength ▁and ▁basic ▁mart ial ▁arts ▁skill . ▁ ▁The ▁beginning ▁student ▁in ▁Hung ' s ▁Tang ▁Sh ou ▁T ao ▁system ▁executes ▁many ▁basic ▁exer cis es ▁which ▁develop ▁body ▁strength , ▁flex ibility