▁and ▁Kong ▁She ung - hung ▁( ), ▁a ▁pair ▁of ▁tw in ▁brothers ▁who ▁were ▁separated ▁at ▁a ▁young ▁age . ▁La i , ▁who ▁was ▁willing ▁to ▁push ▁aside ▁other ▁film ing ▁offers ▁in ▁order ▁to ▁accommod ate ▁his ▁schedule ▁to ▁film ▁No ▁Reserve , ▁was ▁the ▁first ▁of ▁the ▁cast ▁to ▁be ▁confirmed ▁in ▁late ▁ 2 0 1 1 . ▁In ▁regards ▁of ▁him ▁port ray ing ▁two ▁different ▁characters , ▁La i ▁said , ▁" It ▁is ▁difficult . ▁The ▁older ▁brother ▁ends ▁up ▁in ▁Japan ▁and ▁is ▁educated ▁with ▁Japanese ▁culture , ▁later ▁becoming ▁a ▁Japanese ▁business man . ▁He ▁is ▁also ▁a ▁man ▁with ▁wild ▁amb itions ▁and ▁has ▁a ▁har sh ▁child hood ▁leading ▁him ▁to ▁become ▁a ▁mad ▁man . ▁The ▁younger ▁brother ▁stays ▁in ▁China ▁and ▁joins ▁the ▁gu err illa ▁team ... ▁in ▁the ▁end , ▁the ▁two ▁brothers ▁will ▁have ▁to ▁confront ▁each ▁other ." ▁My ol ie ▁Wu ▁as ▁Che ung ▁Ke i - s ang ▁( ), ▁a ▁special ▁agent ▁for ▁the ▁Commun ist ▁Party ▁of ▁China . She ▁face ▁the ▁trag ic ▁loss ▁of ▁her ▁father ▁and ▁younger ▁brother ▁leading ▁to ▁become ▁a ▁secret ▁agent . ▁Wu ▁expressed ▁that ▁No ▁Reserve ▁is ▁one ▁of ▁her ▁most ▁challeng ing ▁scripts : ▁" It ▁is ▁a ▁powerful ▁[ story ], ▁with ▁many ▁ups ▁and ▁down s . ▁It ▁takes ▁place ▁during ▁a ▁war , ▁so ▁there ▁will ▁be ▁trag ic ▁part ings ▁of ▁life ▁and ▁death ... ▁it ▁forces ▁one