restaurant family = bank family
yatming bros = ma wing ching and his sidekick = 2 scam artist
yatming loving yat sam = ma wing ching with lin sheng chun both of the lady almost go scary cause of them
yatming and ma wing ching both get to be in the family cause of their death father(yatming fake father)
old lady head of the family love yatming = lady head of family love ma wing ching
that and many more, well both of this plots are similar to many other tvb drama.