i - s ang . ▁Cec ilia ▁F ong ▁as ▁the ▁mother ▁of ▁Su zu ki ▁K azu o ▁and ▁Kong ▁She ung - hung . ▁She ▁has ▁one ▁regret ▁of ▁having ▁lost ▁her ▁older ▁son ▁during ▁an ▁earth qu ake ▁in ▁Japan . ▁Y o yo ▁Chen ▁as ▁ex - w ife ▁of ▁Ch au ▁S ai - ka i ▁who ▁he ▁mar ries ▁because ▁of ▁Ku om int ang ▁under cover ▁mission ▁to ▁get ▁closer ▁to ▁her ▁father . ▁Man ▁Ye ung ▁Yu ▁Yang ▁as ▁the ▁father ▁of ▁Che ung ▁Ke i - s ang ▁who ▁was ▁killed ▁by ▁the ▁Japanese ▁Sold iers ▁along ▁with ▁his ▁young ▁son . ▁Hel ena ▁Law ▁as ▁a ▁village ▁old ▁lady ▁Eric ▁Li ▁as ▁a ▁Ku om int ang ▁special ▁agent , ▁super visor ▁of ▁Ch au ▁S ai - ka i ▁ ▁King ▁Kong ▁ ▁as ▁Japanese ▁military ▁commander , ▁brother - in - law ▁of ▁Su zu ki ▁K azu ▁who ▁was ▁used ▁by ▁him ▁to ▁reach ▁his ▁goals . ▁ ▁Production ▁ ▁Development ▁and ▁film ing ▁After ▁the ▁critical ▁and ▁commercial ▁success ▁of ▁No ▁Reg rets ▁( 2 0 1 0 ), ▁TV B ▁encourag ed ▁Lee ▁to ▁produce ▁a ▁third ▁install ment . ▁Though ▁Lee ▁was ▁initially ▁against ▁the ▁idea , ▁he ▁agreed ▁to ▁hel m ▁the ▁project ▁if ▁Ros y ▁Business ▁head ▁writer ▁and ▁assistant ▁cre ative ▁director , ▁Che ung ▁W ah - bi u , ▁would ▁return ▁to ▁TV B . ▁Upon ▁learning ▁that ▁Che ung ▁was ▁tied