陰德必有陽報

hidden merits will have visible rewards (idiom)

surname Yin

overcast (weather) / cloudy / shady / Yin (the negative principle of Yin and Yang) / negative (electric.) / feminine / moon / implicit / hidden / genitalia

secret virtue

Germany / German / abbr. for 德國|德国[De2 guo2]

virtue / goodness / morality / ethics / kindness / favor / character / kind

variant of 德[de2]

variant of 德[de2]

certainly / must / will / necessarily

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

positive (electric.) / sun / male principle (Taoism) / Yang, opposite: 陰|阴[yin1]

to announce / to inform / report / newspaper / recompense / revenge / CL:份[fen4],張|张[zhang1]