The　photoreversible　color　switching　system　(PCSS)　is　attracting　increasing　attention　for　use　in　alleviating　energy　crisis　and　environmental　problems.　We　report　a　robust　PCSS　in　which　lattice　matching　enables　bottom-up　oriented　assembly　between　metal-organic　frameworks　(MOFs)　and　inorganic　nanocrystals　(INCs),　two　distinct　entities　that　differ　drastically　in　structure　and　function.　Specifically,　cubic-phase　Prussian　blue　(PB)　of　a　framework　backbone　is　spontaneously　attached　to　rutile　TiO2　nanowires　in　a　defined　orientation　triggered　by　the　lattice　matching　between　the　(001)　plane　of　TiO2　and　the　(222)　plane　of　PB.　Ultraviolet　light　irradiation　accelerates　the　photoelectron　transport　within　the　oriented　TiO2/PB　system　and　enables　fast　photo　switching.　The　derived　TiO2/PB　paper　can　be　ranked　as　one　of　the　best　light-printing　papers　in　literature　because　of　its　high　resolution　(similar　to　5　mu　m)　and　capability　to　be　repeatedly　written　for　＞100　times　without　significant　loss　of　contrast.　The　ultrathin　TiO2　nanowires　are　rich　in　oxygen　and　Ti　vacancies,　which　allow　visible-　and　sunlight-light　printing.　Density　functional　theory　calculations　suggest　that　the　[Fe(CN)(6)](4-)　ligand　from　the　PB　attaches　preferentially　to　the　(110)　surface　of　TiO2　to　give　the　ordered　TiO2/PB　assembly.　The　findings　demonstrate　the　strong　versatility　of　particles-mediated　assembly　in　advanced　materials　design.